The FUTURE of 3D Printing? Computed Axial Lithography!

[Music] hey it's Joel I'm with someone you have seen before hello hey Taylor good to see you again there it is Taylor of course you saw when we talked about computed axial lithography at open sace and it blew everybody's mind of course it's magic it was amazing it is Magic it is absolutely magic but now I'm at UC Berkeley like we're around your stuff yeah so this is where it's invented um my professor Pi Hayden Taylor came up with the idea and then grad student uh Brett Kelly took it further he's the one who actually kind of researched into it and published the first original papers and this is where it all began this this setup right here this a little bit modified of course throughout the years but 2017 this is the area um where computed axial lithography was invented and by invented you mean the the process of projecting the light or the invention of the material it goes into or all of it I mean all of it like that's the cool thing about the process and kind of how new it is is we had to reinvent like all the little things we had to reinvent the materials our projections our Hardware setups like it's all brand new um and all done right here so we'll start with kind of the Optics setup here and this is somewhat the simplest part of Cal so right again simplest part simplest part um we have our projector right here and it's just this used to be an old actually movie theater projector I believe it is a projector just Pro like literally projector yeah just projector um and then it was switched out to just project with four or five nmet wavelength light which is just blue light um because that's what our material reacts to well and everybody out there who does resin 3D printing might be familiar with that because lot of the consumer grade resin printers use 405 nanometer curing resin correct it's very common to use that and then we just have our way to rotate our vial again our rotation part and then we stick it in there and it goes down and it rotates and that's it that that's the kind of hardware setup okay but you also guys had to Magic yourself some goo the goo and the software are probably the some of the two bigger things this is really photoreactive and so we only have a couple minutes so let's let's go quick yeah so uh there's only two components of it so it's actually chemically simpler than SLA which is kind of fascinating so we have two components in here we have what's called their monomer and that's really your building plastic so that's in this case it's udma um but we can have a lot of other interesting things like Silicon other acrylics biogels things like that those are your building blocks and then you have the r thing that reacts to light called the photoinitiator and what happens when the photo initiator kind of gets hit by that four or five nmet wavelength light it starts connecting those monomer dots and forming chains it forms polymer chains now that we have our kind of Optics or Hardware we have our material and now where a lot of the magic comes and a lot of the core parts of Cal is the projection software all the computation that we use to make those images that we project through it the coolest thing about that and we'll go more in depth about it is it's all open source it's all python open source so anybody can come along try to improve it try to work with it try to even print themselves all just python really just python yeah and so on and so on and so it's important that this technology is accessible to as many people as possible can we print of course something okay okay first step what first step is we're going to make those projections those key projections so that open source software we download it we install it and then we grabb whatever model we want to then we put that model into the software and what it's going to do is basically first voxelize it so you may be familiar with like pixels you know stls foxal is basically a 3D Pixel so you have your X Y and Z so we put it into little cubes and then we put it through this optimization software and what that does is it simulates our printer like if this were to be theoretical it like shines our dosage through it theoretically dosage being light dosage being light and then we kind of see like roughly like what would be the dose distribution how would our part form and then we compare that to the original and basically we can optimize that comparing them back and forth being like Oh we need to adjust this a little bit this a little that oh it's optimizing at that level it's optimizing at the level there's a a lot of research just done about that optimization it's a really important part of the process now that the software is ready and done what's the next step awesome so we take our vials of goop that I always take it's always handy on me and then we just put it right into the machine so we have a little gripper here um so again there's not really many components physically of the machine what's the box for so the box is a fluid that has the same refractive index of the glass that's to get rid of the curved effect of the glass so it doesn't like refract lightways yeah makes the glass disappear I've seen those videos okay cool but now we're using it for Science and science for Science and then I lower it down into the machine oh look at that this is called the shadow graph so basically we're just seeing the shadow of anything we're going to print and it looks very cool okay and then we start rotating so we have our goop we have a rotation and then the second I kind of remove it it's going to start making that part the the light's going through that vile right now matching that rotation rate using all those special images and projections that we created and it's all coming together to form these parts what part are we printing we're printing our kind of mascot of the lab The Thinker oh sweet yes so then by calibration you mean power of the light correct correct so this the calibration of how much power so this is just again a movie projector but we put a special LED in here and we need to know how much power is going to go through there and this this is pretty powerful I would look at it directly with your eyes if it was printing one of those kind of powerful things one of those powerful ones it's it's a powerful [Music] projector it looks like it's happening come on there he is ooh ooh that is a good one wait is is it all done yeah look at that oh it's upside down yeah it's upside down oh oh it is good and it's just a shadow that's just a shadow so it's the light going through kind of refracts off the part in there we're kind of able to see how that light refracts do we take out we do take it out and it's very similar to other SLA and resin based processes I remove it I'm going to put it in some solvent and then I'm going to postcure it a few moments later wow look at that it's done and it's out and it looks great yeah it's cleaned postprocess um and all ready to go like for Just Happening all at once this is pretty legit yeah and this isn't it like I like it does crazy stuff yeah these These are really good awesome awesome parts that these things make so this is the same process but these ones we like really highly calibrated and looked at and they just look beautiful and they're just so well defined another cool one is the over printing so we don't have those layers we can print like right over objects and there's a hearing aid um scan right over a hearing aid um insert and then it goes right in there so wait a minute so you can suspend the hearing aid within the volume and just print around it that's it yep you can now think of the like limits you can do with that all the different things you can print over with with we call over Printing and then we have our little metal print or full Copper let me trade youone here take the tiny think or your child take our child put them right there o that is Tiny But that is that is a metal Arrow that's a cal copper dog bone wow all these parts are are just all Cal which is just crazy what it can all do just all these different things one machine this is amazing dude I'm so happy we came down and I know in like 12 24 months time you're going to be like hey Joel hey David come see this new cool thing that we just invented Happ there's tons of cool things happening right now that aren't quite ready to show but yes it's it's just moving so fast so many cool Concepts and ideas and new people coming in there will be constantly new cool things to show off well for all the stuff that you can talk about that is public look to them right there and let them know where they can go to find out more yeah so we have our GitHub which has all our open source software we're going to have a Discord which will be used for the open source community so if you want to talk to us more about the concepts contribute learn they'll be a great place to go and then otherwise we will have a ton of different research papers videos like this just other great ways to learn about the cool science we do and to make it as accessible as possible oh I love it links down below obviously Taylor yes super amounts of fine hair thanks for making it this far on this journey if you did you are awesome don't forget to hug each other more fight for a cause you believe in and how should they print things all at once print things all at once and as always high five oh man got some good ones today crisp

Channel: 3D Printing Nerd

Views: 162,825

Keywords: 3d printing nerd, joel telling, joeltelling, 3d printing, 3dpn, computed axial lithography

Id: oHPrnYMdLow

Length: 7min 56sec (476 seconds)

Published: Fri Jul 05 2024