- Five, four, three, two, one. [canon firing] Hey, it's me Destin, Welcome to the second channel
here on Smarter Every Day. This is the Mark One
Supersonic Baseball Cannon, It is beautiful and I love it. [Destin giggles] So this is something
that we built over a long period of time, but it's been in
my brain forever. The whole idea of a push rod
going all the way through and popping the cork on
the back of the barrel. That's a design that I've
wanted to see built forever. So anyway long story short, this video that
you're about to watch is a one hour long video that gives you a
little bit of insight into how this thing was
built, what all we did, our thinking along the
way, things we discovered, things we learned, long story
short, this is the deep dive. If you wanna see this kind
of stuff, it's really cool. But if you're just into
seeing the baseball go supersonic and hit
that plate back there, you're gonna wanna watch
the first channel video. Anyway, let me go show you
what happened when it hit. It's pretty rad. So the ball just goes away,
it's pretty impressive. On this backside, I think that
one's beautiful right there 'cause you can see the seams. A secondary goal of the Mark
One Supersonic Baseball Cannon is to gain independence
through Patreon and the way I hope to do that, and got my wife to
agree to the plan, is to send out baseballs
with a Smarter Every Day logo to literally everyone who signs up on Patreon. Also the Rocket City
Trash Pandas are involved. They helped me
get the baseballs. I'm a big fan of
the Trash Pandas, and I thought you might
like that logo on there. So anyway, if you're interested in supporting Smarter
Every Day on Patreon, I wanna be able to just
do things like this because it's in my brain and I don't wanna have to go out and try to find a sponsor
and stuff like that. And so the idea is independence,
that's pretty much it. So anyway, long story short, if you would like to become a
patron of Smarter Every Day, I would greatly appreciate that. And I will send
you this baseball. I've signed a lot of them, but
I haven't signed all of them. So some of them will go out
in the unsigned condition. Long story short,
thank you so much for anyone who even
considers doing this, I would now like to share with
you the hour long super cut of building the Mark One
Supersonic Baseball Cannon. Let's go get smarter every day. [upbeat music] - We might make them a little
thicker if we go aluminum. - But the most important thing is that we put this on a trailer so that we can take it places and shoot supersonic
baseballs and things. - We can hook you up with a-
- Yeah. - I'm not worried
about the trailer part. - Yeah, you're right.
- No, I mean I'm serious. We need to turn this into
a trailer launch system. - Okay, it's gonna be long,
longer than just the deal and we ain't got into it.
- Yeah. - We didn't get into what
sticks out the back yet-- - (Trent) We just can get
a longer trailer, man. - Is it a longer trailer? [laughs loudly] - We need to talk about
that just a little bit. Now my concern
is, and a question this will be a
great math problem for some aspiring
engineering student. How much does it take to pull, how much force is required
to extract this seal from this barrel with
a perfect vacuum? - (Trent) As well as
pressure around that as well. Ours is literally
about past that two. - (David) I've kind of
come to the conclusion of pressure around
the back of it won't be that big of a factor, but this will extend
the piston out here to where there's no- (Destin) No, this
is a soft problem. So right here, what you do
is you have the pressure. So if you think about
that right there, you got the circle like this. And so this is your area here. - (David) Right, it's
like the retract stroke. - (Destin) Pressure is
equal to force over area. So that area right there is
just the diameters power square, blah, blah, blah. But the difference in pressure,
you've got an absolute, huge amount of pressure if
you're inside that 4,000 PSI. So if you extend that thing
all the way past that outside- - If the piston is fully
engaged in the barrel, if the piston is not
engaged in the barrel- - (Destin) You still
have the same issue. - Okay.
- But- - That was my question. - It is you still
have the same issue, but if you extend this thing
all the way to the outside of the pressure tank and you
have seals here and here. Then the difference in pressure is only atmospheric
pressure to vacuum. - (Jeremy) Then you only got
15 pounds, just rounding. - Yeah, 15 pounds a square inch. - (David) It's kind of
what we're sure it looks. - (Jeremy) Well
yeah, 14.75 pounds. - [Crew] I don't understand
a single thing you just said. - Okay, if we have
a syringe like this, and we have a
barrel right there. - [Crew] Okay. - (Destin) If I have a
piston in that, like this, I'm trying to pull it this way. And if you think about the face
of that piston right there, it's gonna look like this. Right?
- Okay. - (Destin) This is
the Roger pulling. So don't worry about that. But this right here,
all that sees pressure on the inside of that tank. - Okay, I got you.
- Yeah. - (Destin) Okay. So pressure is equal
to force over area, that we're trying
to solve for force. So the pressure of that on the
inside of the barrel there, times the area that it sees, is gonna be the force
required to pull that. (David) I got you. If we had to- - (Jeremy) To pull
against the force from the pressure in the tank. - (Destin) From the
pressure from the inside. If we have thousands of
PSI on the inside of there, that's a really big number. (Jeremy) You're not gonna
be able to pull it out. [laughs loudly] - (Destin) However, if
you design it like this, you have a barrel
there like that. And you have that thing running all the way through, like that. - There's no- - (Destin) There's
no pressure pushing on the backside of this. - (Jeremy) Oh, oh, oh, okay. - (Destin) You with me? - (David) Yeah. - (Destin) So you have on
this side, you have 14.7 PSI. And over here you have zero. [Trent] So in some
way, shape or form, it's similar to this design. No?
- Not at all. - (David) I only brought this up because of the little
kinetic energy gizmo. - [Trent] Well, there's no. Okay, nevermind. (Destin) No. If you did this and you had
seals right there somehow. So if you had a pipe, if
the design was a big pipe with a pipe in the middle. And then at the end of it was
open so that when you pull it, it goes [Foomp] and then
all that air rush in there, that'll work. So this is a pipe, it's a
pipe welded inside of a pipe. - My thinking with all this
taper and what have you, whether it was a purchased
tank or we machined it. If you got holes in there,
it's gotta go around corners and what have you. - Okay, so imagine this. Imagine, so right
now we've got a pipe and then we're pulling
the plug out, [Foomp] and then all the air
rushes in the end there. - Yeah. - What if we have the pipe all the way inside the tank,
all the way down the tank. I don't know if this
will work or not, but we had multiple
plugs along the pipe and we disengage
all of them at once and that lets it all run
in at multiple places. Would that work? - And so we'd actually
by pulling this back, we'd be increasing this
volume and actually getting a slightly lower pressure
here for a moment there. While we're pulling it back, we're actually increasing
our vacuum a little bit. - (Destin) You'd be
increasing the pressure. On the pressure side,
you'd be decreasing the pressure on the vacuum side. - Yeah, that's what I'm saying. We'll be pulling more vacuum. - (Destin) Cool. So moving forward. - Threw a bunch of ideas there. - Threw a bunch of ideas?
- Yeah. - (Destin) So can you
take what David's got here and put it in 3D. - Yeah. And we can make drawings
where it can be fabricated, machining drawings or whatever. - (Destin) Let's do that. - (David) Did we
make enough decisions to go to that step though,
'cause what I'm wondering? - I think what's
gonna end up happening is as soon as I
started modeling, I'm gonna have a
bunch of questions. 'Cause at that point I'm
putting screws there, I'm putting how do you make it? And so we need them.
- You're know where to reline- - There'll be a
lot of decisions. Yeah. - (Destin) This is gonna be, it's gonna get
real, really fast. He's very fast at design. So what's gonna
happen really quick. Once we start making this thing is we're gonna have
the trailer component and we're gonna have the
triggering mechanism component. This is gonna be
the simplest part, the barrel and the tank's gonna be pretty simple
once we get going. I think the decisions
that were made is we have the barrel go all
the way through the tank, that's the main decision
that had to be made. And then we're gonna
have to come up with a mechanism on the side
to extract that really quick. - (David) So we're gonna
have holes in the barrel for the air to then go into? You okay with losing
the aerodynamics of the- - Let's back up a step here, 'cause I thought we
were doing a solid bar that we're pulling out. - (David) That's
what I was thinking. - I'm thinking like
round bar almost, we need a machine to make sure
that the tolerance is good. - (David) Put O-ring
seals on the end of that. - Exactly. We have O-ring seals and then
we'll snap our O-rings on, but it'll be one solid
bar, but this tank is open. So all of that air can come in
and we just need to make this long enough that we can
push it all the way in. And the O-ring seals are there and once she start
yanking it out, then it's just a solid
bar hat comes back. - (Destin) I hear what
both of you are saying, but I think if we take the pipe
and we go all the way back, then that's gonna
keep that aligned. So we just keep enough material to keep it aligned
to the barrel. - (Jeremy) Right,
he's already got it. He's got a bush in
here and we got here, so that's our two bearings and then this is gonna
be a machine rod, It's gonna stay straight. It'll go back in the
same spot every time. - (Destin) And you're you
just chamfer the end here? - Yeah. And you just need
a little chamfer, two O-ring grooves
and then a solid bar going all the way out of the
back that we've machined. So we got a good tolerance. - The air is gonna- - (Destin) So what I'm thinking, so you're saying you would
just have it in there and you would weld it
up with it all in place? - (David) Not
necessarily weld it. - (Destin) Well, I mean,
you're gonna have to weld, you're gonna have to weld
these bushings at the back. - I think the back should
look like the front, should be a bolt
together assembly, because I think we will have
to get in and out of it from- - All I'm thinking
is a flat bar here, not literally, just flat bar, but you just need
some kind of disc with a gasket underneath,
we bolt it down and the gasket just
needs to be able to stand whatever the pressure is
that we're working with. - So we just put a bolt
hole pattern around that. - So I've been successful in
uniting you both against me. So it sounds like
we're ready to go. [laughs loudly] - Now that we've decided
how we're gonna do it. - Exactly, now we're
know what we're doing. - We'll tell Destin
what we came up with. [laughs loudly] - So, cool. Yeah, I'm Destin. - Jimmy Cross, good
to meet you, man. - (Destin) Jimmy, you've
been all right, dude? I'm Destin. - Donnie Cal. - (Destin) What's up, Donnie? How are you? - (Donnie) All right. - (Jeremy) That should be hot. - It's nice and warm man.
- Yeah. - (Destin) That's a
beefy flange, dude. - Oh yeah, it is. 300 pound flange. - (Jimmy) Hey, it's hot now. - (Destin) Yeah, yeah. - (Jimmy) You find
out the hard way? - (Destin) No, I like
touching hot stuff, I wasn't too smart growing up. [laughs loudly] - (Jimmy) I wouldn't
either, I'm a welder. [laughs loudly] - (Destin) That's not
true, welders are better than engineers,
everybody knows that. All right. Man, that's a good looking weld. How many runs did you have
to go around with that? Did you weld this? - (Jimmy) No, he did. - (Jeremy) He did this
and this, I'm assuming? And then the other guy
did this weld here, because I was watching him. - (Jimmy) I think
he's got three passes probably around that. - (Destin) Three? - (Jimmy) We got one on the
inside and two right here. - (Destin) So this is a
port for our vacuum, right? - That's correct. We got one for gage
and one for our hose. - Gage and hose?
- Yeah. - (Destin) And that's
just MPT thread? - Quarter inch MPT.
- Okay. - (Destin) Man
that's beefy, dude. That's right, here is a lot of, that's a lot of vacuum
"ullage" right there, dude. - Yeah, it is. [laughs loudly] - (Destin) How much
does this weigh? - I don't remember exactly,
it's about 300 pounds. - (Destin) Pretty beefy. - Do you want me to see if
they'll sell us some helium? If you do, tell me how much more and I'll find that out. - (Destin) Well, I at
least need to know. I think we might be able to get what we need done
with just nitrogen. We run the numbers and
nitrogen is lighter than air. And so the lighter the gas, the higher the
speed of sound is, so it'd be good to
know how much helium is and if it's available. Yeah. - Find out right quick. I meant to ask him
that yesterday, I
forgot all about it. - (Destin) Oh, it's all
good, it's all good. So this is normal steel, right? - (Jeremy) That's correct. - (Destin) And that stainless? - (Jeremy) Yeah,
plain carbon steel. - (Destin) So how do you? is this stainless? - Yeah, the whole barrel
here is stainless. And this part right here
is plain carbon steel. And it's just a special weld
for join the two together. - (Destin) To adapt the two? Really? All right. Nice. - So they made a little
jig, that's good. - This is incredibly awesome. Look at you, your little
tape measure on your pants. - (Jeremy) Yeah, this way I
don't ever have to take it off, but I still get the job done. [laughs loudly] - (Destin) Okay. So they're getting
them set in there and they're gonna put those
little braces in there, right? - (Jeremy) That's correct. - (Destin) And
then weld those in. - Yeah, but the set up now is all of our
equipment for firing the piston, our spring, all
of that will be on this side. - (Destin) Right. - And then the barrels, the
reducer will be over there. - (Destin) Gotcha. - So these right here go in here and the idea is to
brace that thing. The idea is to- - (Jeremy) Sort of like
a temporary support while we're feeding
the piston in. So it'll actually be
down just a little bit until it bumps up on the barrel equipment at the very end and then it should be
off of those supports. But when it's firing and
moving back, super fast, it shouldn't touch those. - (Destin) And that's gonna
go on the rails right here? - You got it. - (Destin) So those
rails are how we're gonna adjust the sear back here. Oh, y'all talking
about the X in there? - Yeah. - (Destin) That's a
hard one, isn't it? - Yeah, and hard to
reach up in there too. - (Destin) I thought David
said he hired the best welders? [laughs loudly] - I think he just
wanted to get the job. [indistinct] [laughs loudly] - I think he shot
you a lot of bull. - (Destin) Jeremy drew It, you can't make what
Jeremy drew, man? - (Jimmy) I guess he owes
you money so he's run off. [Destin laughs] - (Destin) So what we
wanna do today, David is we just wanna
look at our parts and make sure we
got them all here and we're gonna be set
up to assemble tomorrow. That's the sear right there. Man, that's pretty, aint it? - (David) Oh yeah. - (Destin) Is that the one
that came from Pennsylvania? - (David) That's
your pop-it valve? - (Destin) No, that's
from Grovetown, Georgia. Feel that, that's beefy, dude.
- Yeah, I did, man. - (David) What is that? - (Jeremy) I set up
all of these and- - (Destin) It's a
sear we've created. - (Jeremy) There's our
other heat treated.. - (Destin) Yeah, that's amazing. Okay. That's where the party's
gonna start right there. [laughs loudly] - (David) You know that
work you pop-it valve? - (Destin) Yeah, yeah. Basically. And then we've got what,
so that part right there, is that stainless, Jeremy? This right here goes on
the seal surface, right? - This one. This is the body, which is why it's nice and
almost polished looking, they did a really good job. - (Destin) Where's the top
hat, what I call the top hat? - Right here. - (Destin) Well,
okay, enough top hat. This is the housing? Where does the rod run through? - So that part is
wherever our pallet went. - (David) I put it
right back over here. - Okay. - (Destin) Gotcha. - (Jeremy) That's this guy. - (Destin) Yeah, okay. And so yeah, it does
have bearings in there. Okay. - So the inch and a
half part will be here. And then the three inch body, it stops right about there
when it's in the back position. - (Destin) Got it. Our goal tomorrow
is to assemble that and pressure test
it like Jeremy said, 'cause the main
concern I have is we're gonna shove that
thing up on there, that valve, we're
gonna shove it on there and then we're gonna
hope it holds pressure and that's gonna
be the test, right? - Yeah. - (Destin) That's
gonna be the real test. - Why would it not? You don't think it will seal? - (Destin) Yeah,
if we have a leak back by that shaft right
there, that's a possibility. So we'll see if we have a leak and then if we don't have a leak then the next step
would be paint it. So yeah. - Well, the trail
around needs just paint. Somebody crammed it apparently
before you guys bought it. - Yeah.
- Mm-hmm. - That's actually
what the lady said when I bought it from her, she said she was
preparing to paint it. - (Destin) Yeah. - So she just painted it
with [indistinct] paint or something like that. - You know it ain't
got no brakes on it? - (Destin) Correct. Correct. - Well, that's probably okay. - (Destin) I acknowledge
you hate the trailer. Got it. [Destin laughs] Yeah.
- It's for the record, every time I've talked to you, you've brought up
hating that trailer. [laughs loudly] Absolutely, every time
I've come here, like, "Man, that trailer sucks,
you should use my trailer." every single time,
yeah, we know it. - We putting a Cadillac, I mean, it's like something they
do in Lawrence County. - Yeah.
- Yeah. - You got all this
money in this thing, you got $800 trailer
you put it on. - Yeah. - (Destin) Hey man. Yeah, that's right. It was available. - Putting them close to the end it's not catching
it at the point where it's starting to tip. - Okay. - So we'll probably, if
it was right at the end, for example, and there's strain. It wouldn't help us. What we want is, as
it starts to go inside and it will catch that first one and kind of ride and catch that
second one and then bump up. So we kind of need it to be, but there's nothing fancy about the actual weld
that holds it in place, It's just getting
it into where it is and then you can reach in there. Give me a good head tack. We should be- - (Destin) So basically
go in as far as you start cussing Jeremy and then come back about
an inch and a half. [laughs loudly] - (Jeremy) Yeah, there
you go, I like that. - (Destin) Yeah. - What we have an idea y'all what we thought
we might do is get this about where it needs to be. Then reach in there and
tack these two together and see if that will hold it. - Hey, welders have
never cussed engineers. [laughs loudly] - (Destin) I know that's a lie. [laughs loudly] You could tack it to that
little angle iron you got there and then, nevermind. I'm gonna shut up,
I'm not a welder. [laughs loudly] - You can do that centerpiece. - Since the Dawn
of blacksmithing
in the relationship between welders and engineers
has been contentious. [Destin laughs] Wouldn't you say? - Well, I have worked
with some engineers that's really good. - (Destin) Yeah? - Really good. - See if I got the right
measurement up here, now see if I got it
centered side to side- - (Destin) If I
understand correctly, that was an over
the top implication that we're not good engineers. - No, no, that's not
what I said at all. [laughs loudly] So that is, can you read that? - That's about right.
- All right. - Can you weld that
without burning me? - Oh, worse mercy. - (Destin) Here you go,
Jeremy, he's about to pop it. - Yeah. [welding torch sizzles] - (David) You didn't burn me
much but my little finger. - (Destin) How'd it look? - (Jeremy) You got some action. [laughs loudly] - (Destin) How'd it
look on that side? - (Jeremy) I closed my
eyes, so I don't know. [laughs loudly] - I'm gonna say that ought to
be what we want right there. All we gotta do is
just get in position, wherever you want it. - (Donnie) Do you
want me to tack the other on up right here too? - All right, hold. [welding machine sizzling] - (Donnie) I didn't
[inaudible] the other one. [welding machine sizzling] We couldn't see it. - (Jeremy) Probably down shaft. I just wanna time
when I come back I got a couple of
joints to work on. - (David) Well, all we
gotta do is this right here. What about draw, do
you wanna go ahead and put the rest of
the stuff on this? [speakers talking
over each other] [grinder grinding] [indistinct] - The one on this
side looks like it's actually more of a gap. - The second one looks
like it's almost touching. [welding machine sizzling] - (David) You're gonna burn
the lens up on the camera. - (Jeremy) Yeah, can we? - How much does
that thing weigh? - This? - Yeah. - About, I would say
about 500 pounds. - Okay, and this weighs 300? Let me ask you, are the
holes already under there? - (Jeremy) Not through
the trailer, no. - Let me ask you this. If we have the gun lined
up over the tongue, we can never hook
anything up to it. Is there any value in
offsetting it to one side? So that in the event
that we wanted to hook something up to it, a tractor or something with a
ball on it, we could do that? - You mean to move
it slowly assembled? - Yeah. - Even if you get
it off to one side, it would still hit your
tractor, unless you angled it. Is that what you're
saying, Jeremy? - Yeah.
- Okay. I wonder if we made a- - Primarily just
when you turning it is that is the main thing. - (Destin) An adapter
to go out of the back of a class three hitch with
a ball off to the side, something to think about,
something to think about, that's probably for another day. Jeremy's drawings
can be trusted. - That's all we
had to work off of. - He didn't even check up, he didn't think that
was funny at all. [laughs loudly] Some jokes just aren't
funny to Jeremy. - I flipped in engineer
now, trying to figure out where I missed it at. [laughs loudly] - You putting the comedian
on the back burner. - Yeah, I'm trying
to solve the problem. - We need some
Yosemite Sam mud flaps that says, back off. [laughs loudly] What I've learned
throughout the years is I engineer something and then
I make it all stick together and then I hand
it to the welder, then I do this,
then I walk away. [laughs loudly] And I come back and it all
fit, my design was great. - You know what
you're supposed to do? This is what you're
supposed to do, me and Jimmy used
to do this all day. They give you a drawing
and you look at drawing and all places it says
field verification. [indistinct] - Oh, that's good. - Oh I have that on my- - That lays everything
on the welder. - It's on there somewhere. [speakers talking
over each other] - Field fit, I've never used it, oh look at that right there. Field fit. [laughs loudly] You see what happens. (David) This is a bronze
impregnated, PTFE, just generic term,
I guess wear strip. We put in two different
grooves in here to help support the
weight of the piston as it strokes back and forth. Usually put it right
next to the seal, help ensure that the
seal doesn't get damaged. - (Destin) So you're
gonna put it in there? - (David) Yeah. One of them is cut to
the right length already, we'll go ahead and
pop it in there. That's pretty much it. So it's probably like
five or six thousandths [welding machine sizzling] smaller diameter than the
bore of the housing here. So the piston rides on it. - (Destin) Nice. So these seals blow up, right? - (David) Yeah,
they're directional. - (Destin) Is there
a port or something that puts air in the seal and
it blows up like a balloon? - (David) Just this
void right here where that O-ring is. - (Destin) Gotcha. - (David) So probably it
doesn't actually move that much, It just tightens up. - Tightens up?
- Yeah. I brought my headlight. - (Destin) It's pretty
neat material there, it's just bronze? - (David) Yeah. - (Destin) Oil
impregnated bronze. That's neat stuff. - (David) Yeah. Pretty cheap too. - (Destin) Commonly
used in industry. - Yeah. Usually you put at least
one right next to a seal. - (Destin) It takes
the mechanical load. - It takes the
load off the seal, keeps it running concentric. - (Destin) Neat, that's cool. [blow torch blaring] [hammer knocking steel] Taking out a lot
of anger ain't you? - Yes, sir. [laughs loudly] I hate engineers! [Destin laughs] - Today is the day
that we assemble the Supersonic Baseball Cannon. Here's what we've got. Got Jeremy, David
working on stuff here. This is the meat and potatoes. This is the huge pipe
that we're gonna use as the pressure vessel. You can see we've got these
sticks in here to support stuff as it gets pushed through there. You see, we have this
I-beam assembly here and these rails are
going to be the base from which we build everything. So if we go over here, I'll show you the parts that
these guys have got laid out. So this is the sear assembly or I guess you could think
of this as the trigger. So this thing right here
is what's gonna hold, it's gonna hold
everything in position. And then when we release, that's when the pipe
is gonna go backwards, that'll make sense later. But you can see, we
have the holes here so that it can mate on
those rails over there. This is the big piston that's
going to cock the whole thing, you can think of it that way. We're gonna push the
rod all the way through the barrel there so that
it can seal on the front. So this is the pressure
vessel that Jeremy designed and essentially we've
got a huge flange on the back and the front. And we're gonna have this rod that goes all the
way through the thing with the seal on the back
and a seal on the front. The seal on the front, I'll just grab it off
this table right here. This. This is going to go right
up against the barrel. This is a stainless
steel interface here. We have this taper. So that rods coming all the way
through the pressure vessel. It's gonna go right here and push right there
on that surface. So we're gonna be
pushing to seal. So we have a vacuum
in the barrel. We're gonna have
pressure behind that and the idea is
we pop that loose and let all that pressurized air run in there at the same time. So that's how we
fire the baseball. The secret to getting a
good vacuum on this side, as the ball goes forward, think about all that
pressurized air running forward, it's gonna move forward. At some point, you're
gonna start pressurizing what little air was in here. So we've got this on the front. This is a huge vacuum volume. So we're pulling a vacuum
on this whole thing. This is also under a vacuum. And you can see
this rail down here, this is a hollow tube
that we've welded and this gives us
extra vacuum space. So the idea is, as
the ball goes down, there's no air
there to pressurize. So the rod that runs all the
way through the pressure vessel has the seal on it that
we were talking about here on the front. And that right there goes all the way through
the pressure vessel. And then on the backside
we have to seal as well. And that's what this is,
this is a very heavy, very special piece that has a
certain surface finish on it. And that's gonna go in
this housing right here that David's working on and David's putting
seals in this thing. This is how the seals
work on the back. You've got these special seals that as they see
pressure from the inside, it blows up the
seals like a balloon and it seals along this surface. So that's what David's
doing right now. We've got this special
piece that's gonna go on the back of
the whole assembly and you get these
grooves in there and he's trying to
get the seals in there so that we can seal on the back as well as the front
of the whole thing. That's what we're scared of. I'm scared of the leak Are you guys of the leak? - (David) Yep. - (Jeremy) Yeah, that's
probably our weakest area there. - Yeah. So today's goal is to
assemble this whole thing and do a leak test on the front and the back of
the pressure vessel and see if we can
shoot this thing. All that's gonna be put together with these huge
flanges down here. And we've got these spiral
wound gaskets here as well. So there's a lot
of places to leak and we're hoping it doesn't,
that's what today's all about. [machine operating] - Whoa, whoa, whoa. Get it back down a little. [indistinct] - (David) You just put
them in like that, yeah. - Get over on this side,
when he put the bolt in get it on the pop from the back. - (Jeremy) Now we got to
put our seal on there- - (Donnie) Well, I wouldn't. We gonna get there,
we gonna get there. All right, now you
drop it in there. - (Destin) I'm
getting too excited. [Destin laughs] - And that's why I did
put them above halfway, so you guys could drop in there. - (Destin) That
sounds like something that you learned the hard way. [laughs loudly] - (Donnie) Don't always put, never put your easy
bolts in first. It's "good and
tight", German torque. [foreign language]
[laughs loudly] - Make sure they
are really tight. - (David) Lock tight on that
wouldn't hurt nothing much. - (Destin) So the
alignment between that and the barrel is
critical, right? - It is. - (Destin) So we're just banking that they machined it right? - Exactly. I mean, I called
out the references and I gave him key datum's and tell him what to reference and what to make
sure things were, what parts were concentric
and all the fits and everything have
been really good. So hopefully they also
made it concentric. - Right here? - Yes. All right. - And it's still aligned? - Yes, sir. - Okay.
- Should be. - So then we go
in a star pattern. So we're gonna go down or up? - Up. Tell me when it makes up. - It ain't made up yet, I
can still see through it. - (Donnie) Little thin layer
metal like a razor blade with a smear of
graphite in between. And then it's just wrapped
and wrapped and wrapped. - And then it actually
cramps on that. So if you squish it
all the way down, it's gonna index on that? - (David) That's right. If you mash it down so
far that this is touching, well, you done went
far, is no good anymore. - Oh really? - See how much wider
this is than this? - Yes. - If you get all the way down to this surface,
it can't seal it. - Oh, got it. Because it has to
seal on that surface. - That's right. - If you go there
then, okay, got it. I learned something,
Smarter Every Day. - (Jeremy) Yeah man. - Now you see these holes,
they're not too old, right? So you're gonna have to- - Is there a direction on
this flange, I guess there is. - There is, that way is face up. - Slides right in there? - (Donnie) Well, I hope
we've got enough bolts. - Drop it down. It's pinching on this side. - (David) Oh, we
got that backwards. - It's fine. - (Destin) Is the
gasket directional? - No.
- No. [Jeremy laughs] - (David) I was
talking about these. - Why y'all laughing at me? [laughs loudly] - That's a good question. - Let me say,
flange on this side, flange on this side,
we got in backwards [laughs loudly] - (Donnie) Of course now the
bolts holes may be right, it might be the outside
circumference or the- - (Jeremy) Yeah, that's
kinda what I'm thinking too. The bolt holes are lined
up, we're probably good. - (Donnie) It may be the
outside of it is not- - You mean each
individual bolt hole. - (Jeremy) Yeah. - So you don't know
on the backside here, 'cause it's not threaded. See, like that bolt's low. - Yeah, it is. Yeah. - (David) You're pretty good. - Yeah, it's touching
now, from what I can tell. [hammer banging] - You don't want something
to come flying through there, I'm telling you now. [laughs loudly] Yeah, that's what I
was worried about. Like yeah, I was right. Yeah. - (Destin) It's
the same old budge, it should be aligned now. [grinder grinding] - Did you fix it in the back? It's all I got. I need a few more sandwiches,
to put more torque on that. - (Donnie) I think y'all got
German torque on it anyway. [Good and tight] - That one. - Yeah, that will fix him. [laughs loudly] There we go. - Laugh at us? - (David) We like
seeing engineer's work. [laughs loudly] - Oh man. - (David) We don't get
to see that real often. [laughs loudly] [indistinct] - (Destin) We got it. - Got it?
- Yeah? - (Jeremy) Put that
wrench on the other side. - (Destin) Oh, yeah, yeah, yeah. - (Donnie) What you
doing now buddy? - (Destin) Ready? - (Jeremy) Yeah. - All right. - (Jeremy) Oh boy. - (Destin) Found it. - (David) Oh, wait,
wait, wait, wait. - (Destin) Yeah,
we gotta rotate it. - (David) And we
forgot our gasket. - Oh man, ah shoot. At least we didn't put the
fasteners in there David and then we go. [laughs loudly] [heavy machinery
blocking the speakers] as long as my holder
lines up, that's all. - (Jeremy) Put a bolt in there. - (Destin) Shooting
over your shoulder here. - (David) We need to
rotate it clockwise. Jeremy, I'll let you do
your alignment back here. - Okay. Yeah man. Oh man, that's it. [indistinct] have
to turn as well. [indistinct] - (Destin) What do you think? - I think we're tight, man. - (David) I think I see rubber
squishing out here though. - Yeah we done squished
the gasket here. Yeah, that's as tight
as it needs to go. Oh yeah. [Jeremy laughs] Need a couple more of
those screwdrivers. - Can I have that one? - Once I take it out it's
gonna lock up where it is. - All right, so there's that. - Yep. - Now get the big piece.
- Yep. So close. - I'm hurting you, aint I? - Yeah, you made it
tighter on that side. [laughs loudly] - I put my hammer down. - I just realized that
that should be behind it. - [indistinct] go between?. - You're allowed
to ask questions. [Destin laughs] - Thank you. - It's preferred. [laughs loudly] - Yeah. - Can I ask a question? - You are definitely allowed. Okay. - I'm ready to put the
barrel on this now. - (Donnie) I'm ready
here to go boom. - Yeah, me too. We're gonna do that today,
we're gonna be able to? - I don't know if
we'll get there today. - We're gonna try to put
some air in it that might be- - See if we can
get a seal on it. - Yeah. - That bad boy is gonna go. - Dude, that is so sick.
- Yeah. - I go like like that, right? Just start tapping on
it, like ting ting ting. Yeah keep doing that. Might get a ball
peen or something. - Oh look at you man Gaww that's redneck smart. [Jeremy laughs] - (Donnie) Squeeze
them together, you won't be able to
push it up or down. - That's pretty smart.
- It is. - I'm gonna try and
put a bigger hole in. - Okay, Jeremy go ahead. You come over here. - Okay. I think it's high. Yeah man. - Now you wanna
hear the good news? - What's that? - I had to put that
in there first. - (Destin) Are you serious? - Yeah, the pin. - Yeah.
- Yeah. - At least we know how to do it. - Yeah, now we know
it goes in there. [laughs loudly] - Oh, you got a nut on that? - Yeah I just unscrewed it. - That explains why I
couldn't pull it out. - All right. Now we're got a little more complicated piece
to get in there. [laughs loudly] - Now start pushing. It fell over. - Okay. Dang. - So now we gotta
put the barrel on, get this in the right spot. - Yeah. Once we see that
it's flush up there, then we can snug this up too, I know that we've got
in the right place. We need to get things lined up, we'll see where that ends up. - All right, so David,
do you want to move? Do we wanna pull the
trailer back a little bit? - (David) Sure. - And what we're doing? - (David) Set it on There? - Yeah. - Make this way off, please. - (David) We had to
do that manually. - (David) Oh, all I
do is push the button. - (David) I thought,
now boom the ground. [indistinct] Go ahead and drop
some bolts in it. - (David) We got
six bolts in it. - Man, you're strong, Destin. [laughs loudly] [indistinct] - Yeah. - (Jeremy) Might get
pushed back [indistinct]. I think it actually
should go forward. - David, watch that
camera behind you. - So just semi-snug it there? - (Donnie) Bring it on this way. - (Destin) Do we even need
the flange there Jeremy? I mean the gasket, that
little yellow gasket. - (David) It didn't
go up or down, Donnie? - (Donnie) No, it's on the pins. It just needs a gasket on it. - The rubber gasket. - Needs to go
yonder way don't it? - Down. [Donnie shouts] [laughs loudly] He's just joking with you, man. - (David) I'm just supposed
to push the buttons. - Pull it around to you. - There we go. - (Jeremy) Fill the tank. - (David) You ready? - Yeah, we wanna listen
to the tank first. [air gushing] - (David) Put the
push on it, didn't it? - Yeah. I didn't expect that
to angle up like that. - (David) How come
you didn't get your little panel on over there? - I don't hear anything. It should be sealed
in the front. - Should be sealed in the front. Go ahead.
- Okay. [air gushing] There's a lot of volume there. [Jeremy laughs] - (Jeremy) Yeah,
it's a big thing. - Kind of goofing off. Okay, I'll go on the floor. Ready? - (Jeremy) Yeah, you
recording this, I hope? - Yeah. - (Jeremy) Okay. [air gushing] - It rattled the tin on
my building over there. - (Jeremy) Wow. - (David) I didn't
know it was coming out the end of the barrel. [air gushing] - (Jeremy) So there's definitely at least a little bit of
surface it can push on. - (David) Yeah, buddy. [laughs loudly] - Oh Gosh. - We need to put
a baseball in it! - Ready? - (David) Contact. - Okay, moment of truth. We're gonna
pressurize this thing. The question here is
we've got that rod running all the way through. Does the pressure seal off
right here where that plug is? And also do our
seals back here work? What do you think, 300 PSI? - Yeah, that sounds
like a good test. [air gushing] - (Destin) It appears
to be holding. [cannon fires] Oh, golly bum. [laughs loudly] - (David) Why'd it do that? - (Jeremy) Wow. - So it decided to go. - So the cylinder overcame. - The pressure, so
we need the sear. - It overcame our cylinder,
we need more of the cylinder. [laughs loudly] Yeah man. Geez. - (Donnie) 300 out here, over- [air gushing] - (Destin) How are
you doing that? Oh, look at that. There was a secondary shot because it opened
the pressure up. - (Jeremy) Until they equalized. - (Destin) Until they equalized
and then it closed back. - Oh my Gosh. [laughs loudly] - (David) Maybe we need to
turn back where we had it? - (Jeremy) Yeah, I think I
need to dial this back up. Hold on. Wait, wait,
wait, wait, wait. - (David) We don't got enough
air pressure hold that. - (Destin) No pressure? - Apparently it didn't. So went- - (Jeremy) 'Cause we
gotta overcome the spring and the pressure that's
from in the tank. So if you say maybe 200 pounds from the spring, just
rounding a number, plus- - (David) So we
didn't have a spring on there at all yesterday. And we only put 175,
so this easily held it. - (Destin) Right. - You now need to go ahead and
hook up your hoses to that. - Well, we're trying not
to use that part right now. - (Jeremy) We don't wanna
test the sear just yet, we just want to hold
it with the pressure. - So we might need... - Okay, so the latch
wasn't doing nothing. - The latch is out of the way.
- Yeah. - (Destin) We were just testing, see if we could
do it without it. It is time. The moment we've
been waiting for. - (David) I think
it's gonna hit the- - (Destin) Oh my
goodness, look at that. - (Destin) Oh dude. - Oh, he's moving now. - Oh dude.
- It's moving. - (Destin) Oh, what
hath we wrought? Going up. - (Jeremy) Oh my Gosh. [laughs loudly] - (Destin) Oh dude. - (Jeremy) This is insane, man. [laughs loudly] This is insane. - Oh, golly guys. Okay, here we go. Mark One Supersonic
Baseball Canon, take one. Baseball's loaded. Goggle up, guys. [laughs loudly] Science is about to
happen, here we go. All right, first shot, 300 PSI. - It's definitely quiet, I
don't hear anything up here. - (Destin) No leaking? - Yeah. - (Destin) All right. - We're good up here. - (Destin) You guys ready? Three, two, one. [cannon fires] [crew gasps] [laughs loudly] - (Jeremy) Oh my gosh. - (David) Go see it. - We're about, Oh, I
don't know, 50 feet away. This is quarter inch aluminum. We're gonna see what it does. 300 PSI, no vacuum. Goggle up, this is
gonna be awesome. - Three.
- Fire in the hole. - Two, one. [cannon fires] [laughs loudly] - Three.
- Fire in the hole. - Two, one. [cannon fires] [laughs loudly] Two, one. [cannon fires] [laughs loudly] - Oh man. - (Destin) Oh man. And that's just 300 PSI. Dang. - (Jeremy) Yeah. - (Destin) That's awesome. - And that's a
lot of power, man. - Oh my goodness. I think we need to paint this
thing and we need to get out in a more scientific environment and probably get the
high-speed camera out and see what's going on. But this is nuts. Today is the day. It's a thing of beauty. Check it out. So we've got our set up and let me walk you
through what's going on. This is Jeremy, he's
extremely excited. Are you extremely excited? - Very excited. - Very excited. So we've got the
power bank there. We're using the generator. This is all nitrogen. The reason we're using nitrogen is the molecular weight of
nitrogen is lower than air. Which means the speed
of sound is higher. It's math, but I don't know, people will argue if it
has to do with temperature, it has to do with
molecular weight, whatever. I just know it's faster. Okay, the exact schlieren
setup we're using is called a through beam. Schlieren set up,
as you can see, Trent has the match there, you should see two
matches, which we do. That's what we call
the double shadow. And the reason it's
a double shadow is because the light
goes out and back in and it passes it twice. So the whole point
of this first test is just to see where
the baseball is relative to the shockwave. Now, Nolan Ryan, for example,
when he was throwing, they measured his
speed at home plate. Modern pitchers, they
measure up at the hand. So I think we're gonna
have a similar situation because we're shooting
with nitrogen. It's not that much faster than the normal speed
of sound and air. So I think what's gonna
happen is the baseball is gonna come out faster than
the speed of sound and air. And then it's got
this much distance to slow down due to drag. So I think, this
is just hypothesis, I think what's gonna
happen is that baseball is going to be out here
by the schlieren mirror at about the same time
it's passing the shockwave. So I do not think this shot
is going to show the baseball going faster than
the speed of sound. But this is just the test
shot to ring everything out, make sure everything's working. We'll see what happens. Should be fun. This thing, the math says we can be rated up
to a thousand PSI. We're gonna go to 750 PSI. We've got a big thick, real
big thick shield over there. Let's go look at it real quick. So here you go, two one
inch thick sheets of steel. That is a massive target. We're not gonna hit that today. I don't think, I think
we're gonna shoot over it, we might hit it. But the goal, because I
have to make a decision. Do I measure the true
velocity of the baseball or do I just try to see how it
interacts with the shockwave or do I get a really
interesting baseball smushing up against that plate? So today I just wanna
see if the baseball, it runs the shockwave and then
I'll fiddle with this over the next few days and
get the shot I want. So anyway, let's go back
behind the shielding, which is where we stand in case the pressure vessel ruptures. So here we go. Let's look at the image. All right. - [Crew] Do we have red circle? - (Destin) Red circle? - (Jeremy) Can we do
that one more time? Trent just to make sure. - Okay, we're about to go
through the safety checklist, which is right here. This is what the control
panel looks like. We tried to make it as
straightforward as possible. We're gonna add gas here. We're gonna do the
first shot at 750 PSI, which is the highest pressure we've ever pressurized
this thing to. If you know anything
about pressure vessels, we're gonna be behind
this steel, right? - Absolutely. - Okay, so here we go. Ready for loading procedures. Ramrod. There we go. Is your heart beating fast? [laughs softly] It is? You're excited too. It doesn't feel right to me,
this excited about a thing. - Okay, confirm all
clear of the trailer. - Clear. - (Jeremy) Switch
tank to vent ready. - (Destin) Oh man, you're ready? - (Jeremy) I'm ready. - (Destin) Okay. - (Jeremy) Okay. So the tank is capable
of holding pressure now. - So we're pulling
the vacuum now. My heart's not beating
quite as fast, is yours? - It's had a chance
to calm down. [laughs loudly] - Okay. All right. [breathes heavily] So an absolute vacuum
is negative 14.7 PSI. If we can get somewhere
below 13, we're good. About to pressurize
here by adding gas. All right, tank is pressurizing. Nobody get outside
the steel right now. That is a lot of volume. So we're gonna be holding this
for quite a while, aren't we? - (Jeremy) Yeah. - This is tickling
all of the brain parts [Jeremy laughs] that need to be tickled.
- Yes. - We've got baseball. We've got golly, we've
got ideal gas law. We've got aerodynamics. We have mechanics. We have mechanical design. I get to push a button
and loud things happen. - You get to push a button
underneath the red covers way. [laughs loudly] - All right, here we go. 180 PSI. We're at minus
13.9 on the vacuum. There will be a
significant sonic boom. - [Trent] I'm scared. - I'm a little tingly. We're not quite 300 PSI. Dude, we have a really
good vacuum right now. 540 PSI. We're losing our vacuum. Hey, we're losing our vacuum. Do you wanna shoot? Here we go, you ready? - (Jeremy) Ready. - (Destin) Three, two, one. [cannon fires] - (Destin) What on Earth. - Whoa. Where'd it go? - (Jeremy) That
ball disintegrated. - (Destin) No it didn't. - (Jeremy) I think
it hit the front- - It did hit the back. [laughs loudly] Get the- - (Jeremy) Hold on, hold
on, the tank is safe. - Tank is safe. - (Jeremy) Okay. [Destin laughs] - (Jeremy) Oh,
it's shredded, man. Oh, wait, you can see the seams. [Jeremy laughs] - Fantastic. Okay, so at some point we're
gonna get that high speed. Oh man. Okay, cool, let's go do science. I don't think that one's
gonna be supersonic. - (Jeremy) So we're gonna need
maybe three pieces of tape? I think our tape failed, that's
why we started losing that- - I think, yeah, there's some
early shockwaves I can see. Okay, yeah, so- [crew shouts] Oh wait. [laughs loudly] - Oh man. - Dude, what have we done? I've never seen
anything like that. Is it disintegrating? - (Jeremy) What? - (Destin) It's deformed. - (Jeremy) Yeah, I
would definitely say the ball is already
tethering and- - Look how
flat the front is. - We're not even near
the limits of the system. - (Jeremy) We're barely
over half of our capacity. - (Destin) Look at
it, it's beautiful. - (Jeremy) Can we just walk over and put a ruler in
front of mirror now? - (Destin) That's supersonic. - (Jeremy) And then
we'll know how much that transient space is? - (Destin) You can tell it's
supersonic by the angle. - It has a Mach cone. And it has like
secondary oblique shocks. We can do the theta
beta, what's it called? Theta-beta-Mach equation? No? - [Trent] I don't know that one. - (Jeremy) I don't know. - I think that's
what it's called. There's an equation
that we can look at that oblique
shock right there. This is the start- - (Jeremy) What is that? - (Destin) I saw it too. - Play it. - (Jeremy) Oh, there's
another, what is that? - (Destin) Is it
closing behind it? - (Jeremy) You got
something funky going on. Wow. Is that like a, dropping
something in water? - It's like a Monroe
effect, but aerodynamically, I have no idea what we've done. [Jeremy laughs] We're just gonna, I just
have no idea what we've done. So this is one of those
things where you plan it for about over a year. You start with a meeting, you think the science
works and it does. And you slowly make
design decisions and you try to do
things like this. This took a month.
- Yeah. - And then you slowly
plan things out and the science
holds and it works. I was wrong though. I did not think we would be
supersonic on the first shot. We need to measure it, we need
to figure out that velocity. So do you have something
we can calibrate? - Yeah absolutely. - (Destin) Point 014. Now this is rough. That's it. Now active. So bow shock, what you got? 1050 miles an hour. 1050 miles an hour. Where's my phone? Mach 1.38. [laughs loudly] I'm legitimately having
problems functioning correctly. Okay, day two. We're gonna make sure that
we actually did go supersonic because the shockwave
was detached from the nose of the
baseballs on schlieren. So the change today is
got the plate closer, it was amazing that we hit it,
but we got the plate closer. I've got two stobs in the
ground, that's an Alabama term. Stob, S-T-O-B, it means
stick of wood in the ground. So we've got to stob
here and a stob here. They're 12 foot apart. We've got the
camera right there. So as the baseball goes across, not only can we get
velocity this time, we've got a really
good pixel calibration and we'll be able to get the drag coefficient of
the baseball at hypersonic, no, transonic speeds. Should be cool. So our vacuum this time
is not pulling very good. In fact, it's going
the wrong way. - (Jeremy) Ready if you are. - 530 PSI. About minus four on the vacuum. Okay, here we go. Five, four, three, two, one. [cannon fires] Golly. Two, one. [cannon fires] Golly. Okay. Wow. - (Jeremy) That is
some serious stuff. - Safe. Okay, I'm gonna
go to high-speed. Okay, the indisputable
two stick method. Velocity is equal to
distance divided by time. The time to the first
stick is 29 milliseconds. And remember, this
is happening fast. We're recording at
28,500 frames per second. The time to the second
stick is 36.8 milliseconds. Subtract those two and divide, that gives us 1,538
feet per second, which is basically
1050 miles per hour. Adjust for altitude
and temperature. And yeah. Hey, it's supersonic. - (Jeremy) Yeah? - That was Mach 1.35. - (Jeremy) What? - I mean, I just measured
straight up with poles. [laughs loudly] That's just, yeah. 1.35. - (Jeremy) We got
a similar speed. - It's a lower speed because
our pressure was lower. - (Jeremy) Yeah, for sure. But I mean similar in
a sense, that's pretty. - It's supersonic.
[air gushing] Okay. We have a Supersonic Baseball
Cannon, it is verified. Ready? Three, two, one, fire. [cannon fires] [cannon fires] The baseball goes away. [laughs loudly] Okay, we gotta get
tighter on that. - Three, two, one. [cannon fires] [laughs loudly] - I wanna see it. [cannon fires] - (Destin) All right. - All right, hold on. - (Destin) It might be too big. - The major league ball is a
little bit bigger than that. There it is. - All right.
- Here we go. - Okay, here we go. So the way we've got this
aimed, so it's hard to see, but we have a little
bitty reticle in there. And I have a mark right here. And I know the offset
between the red dot and where the impact is. So it's gonna hit
17 inches down, 12 and a half left
from that spot, which is why we can zone the
high-speed camera in so tight. This is a pretty dangerous
shot for the high-speed camera, but the imagery can't
really see that, you just have to trust me. The imagery's gonna
look really good. You ready? - (David) Yeah,
protect yourself. - (Destin) I'm watching,
here we go, here we go, dad. [cannon fires] Did it trigger? - (David) Yeah. - (Jeremy) It blew the camera. It didn't go over, but it
definitely blew the camera. - (Destin) Okay. - We're gonna have
to put sand bags on the legs or something. - Hold on, yeah, don't
touch any cables. Oh my goodness. It just goes away. - It looks symmetrical,
doesn't it? - It looks like a galaxy. It looks like a,
that's unbelievable. The seams are the
strongest part. That's an official
major league baseball. [baseball exploding] [baseball exploding] - (Destin) Oh,
strip the aluminum? - (Jeremy) Yeah,
that's what I said. All the aluminum
threads came out. - Pulled the threads out. - (Jeremy) Everything
else held up. - Okay, it looks like that
was the last shot for the day. What happened was, right here,
you see this bolt right here? The bolt was through there and it was holding our
push cylinder in position. And it stripped all the
aluminum out of the steel bolt, which is why threaded aluminum
is always a bad thing. So that's it for now. Wow. Looks like our seal
had some issues too. What? Oh. - Jeremy,
go down with it. - (Destin) That's where we hit. - (Trent) Thank you. - All right. That was amazing. I hope you enjoyed
checking out how we built the Supersonic Baseball Cannon. I'm in love with this thing. And I'm super excited about
all the different things we can do with it. So if you're interested in
supporting Smarter Every Day, you know me well enough to know that I'm a little bit
out on a limb here, but if you're interested, you can go to
Patreon.com/smartereveryday and I'll send you a baseball. Literally everyone who
supports on Patreon, I'm gonna send one of
these baseballs to you. And to end this video, I thought you would really
enjoy seeing how the kids packed up all the
baseballs to ship them out. They had a lot of fun with that. So anyway,
Patreon.com/smartereveryday. I'm grateful to you. I'm Destin, you're
getting smarter every day. Have a good one. Bye. [children chattering] So we're using this
as an opportunity to teach the kids how to work. I signed all these, you
guys are boxing them, right? [children chattering] Yeah? And then they move over
here to the older kids. What'd you got here? Let me see. Oh, how long did
that take that long? - Not long. - (Destin) Not long? What about over here? How are y'all doing? - Pretty good. - (Destin) Pretty good? Yeah, sealing them up. - [Child] You're gonna
have to with this packages- - (Destin) Are you
guys doing, men? - [Boys] Good. - (Destin) Yeah, is it working? - [Boys] Yes sir. - (Destin) All right. - I thought you said
[indistinct] about two seconds? - [Child] They
do, if you get it- - All right, all right. Keep going kiddos. Quality control's the thing,
we're gonna inspect everything. It's really good. Giving them some money, they feel like they're
getting the job done. They are, they're
doing a lot of work. So anyway, that's pretty cool. Thanks for letting us do this.
