Tips To Remove Weld From Tubing

everyone welcome back to the shop today we're gonna eliminate my most hated weld of all the one that's inside of a piece of tube [Music] so what I need is this small piece of tubing to slide over the top of this piece of two inch now what's stopping me from doing that is a stupid weld seam inside this tubing and I hate that well it's my least favorite weld of all time but if you need a telescoping fit you can buy seamless tube to do this you can get it in just about any size and get it around and you can get it in a rectangle you can get it in square and depending where you live it may not be readily available to you it's also more expensive so removing the seam out of the section small section of tubing for a small project is actually a pretty good idea I'm gonna show you the four or five different methods that I've used over the years to get rid of the weld seen from a short piece then build a cheap tool for the long sections you'd be surprised how easy it is just to peel that weld right out of there with just a simple chisel and a hammer but one I'm using is a proto this is a three quarter by 12 with a 7/8 cut on the tip this is my go-to tool I have to remove it out of a short section of tubing another tool I like to use is one of these finger Sanders it uses a 3/8 wide belt the one I'm using here is a Chicago pneumatic turns it like 22,000 rpms be sure to get lots of belts if you have one of these things because it likes to use them up pretty fast and make sure you turn them in the right direction too because if you don't belts like to break ah the die grinder which I call the devil sliver maker this thing's pretty effective at removing the weld but you get all these little filings everywhere and they're just a pain to get rid of you get a whole bunch of different style burs they're kind of expensive to purchase but once you got on they last quite a while if you have more time than patience a file also works this one's just a half round bastard file pretty coarse and it probably takes about 2 to 3 minutes you can you can rough out a weld pretty quickly if it's a small section of tubing but it's a simple and effective fire also can remove that weld seam out of there if you're good with a torch this is a great option if you're not good with a torch you'll probably destroy your tubing but it is quick and it is effective especially on larger tubing where that weld seam is pretty big scarfing tip works awesome to remove that weld you have some extra free time on your hands go to the scrap bin grab some of these small sections of tubing and bust out the torch and just practice trying to scarf that weld out of there it really will help with your torch skills and then when you do need to be able to remove that weld man you're ready to go I'm not a real big fan of grinding a groove on the outside of this tube I think it looks unprofessional but if this is your only option it does work the chisel the file all those things work great on short sections but what do we do on longer pieces I want to show you the tool that I made to remove that pesky weld out of there you need a piece of high speed steel a piece of all thread a few nuts endcap the actual slug material itself and that's about it really pretty simple we're gonna drag this piece of high speed steel through the inside diameter of this tubing much like how a shaper works if you're not familiar with the shaper so I have a video on that it's pretty interesting to watch so go check that out but we need a way to hold this piece of high speed steel so I've cut three inches off the tube that I actually want to fit inside of this then measured where the weld seam is located and transferred that on to our little slug here I've then scribed the width of the high speed steel on to the surface of the tubing and came down about an inch or so that way we got at least a good half of an inch inside of the tube to help it get started and drag straight you can use a bandsaw or you can use a skinny wheel to make this little groove after we got the groove in I just stick it in the vise and I literally peen over the two little arms that are left that way we've got a nice good little channel for this piece of high speed steel to sit in it doesn't have to be too precision now looking at the high speed steel itself it needs to measure the exact width of the the mail tube that's going inside of the female when you do cut the high speed steel to length you can't take this to the bandsaw you're gonna have to use a skinny wheel or some sort of abrasive cut off to cut it we don't need to make it oversized just make it the exact length and you can grind that really really really close with either a belt grinder or a flat disc I basically want the high speed steel to have a square back end which is gonna ride against the inside wall opposite of the weld seam the cutting edge could also be square or a neutral if you're not familiar with the way high-speed steel works you don't have to worry about sharpening it in order to drag the slug through the tubing we need to use a piece of all thread I like to use the biggest piece that I can and get as close to the cutting edge of that piece of high-speed steel and we're gonna make a basically a cap for the back we're gonna drill a hole weld a nut and we're gonna get that hole as close to the cutting edge as possible that's going to prevent the slug binding that it walks its way through the inside and of the tubing be careful not to overwhelm the nut because you'll distort it just some some good tacks to keep it from twisting off and the weld seam on these tubes are never the same so you might end up over the years making a couple different ones where different weld seams are I'm gonna cut the rod to length and then weld a nut on the end of it so I have a way to grip the all-thread and twist it to start the assembly you just need to stop on the back just to cap it just something to block it because we're gonna be pulling on the edge of the tube and I like to put a washer on the end because there's gonna be quite a bit of friction there give yourself a little bit of a starting point by chiseling out a good inch or so if you squeeze too hard on the vise you're gonna pinch the slug and too if you put a little bit of an angle your chips will roll out so they get bound up a little shot of Lube okay we're go switch to the back of the vice fry squeezing on it we are so gonna kick it back [Music] okay just clean up the ends a little bit you could also make this to where you could just use your press and punch it through that's pretty simple too but I wanted to show you the all-thread technique so this is a pretty slick option if you only need one or two of these pieces and you don't have any seamless tubing available to you at the moment over the years I've collected a couple different sizes and I keep all the rods and I just have stuff them in a drawer in my toolbox if you're looking for high speed steel you can find it on ebay or amazon this stuff is cheap and I suggest keeping some in your toolbox at all times I know what you're all thinking how do we remove the weld out of a piece of tubing or pipe we're gonna have to implement something a little bit different I think we can still pull a slug or some sort of cutting device through the center of the tubing but that's gonna pose some problems because there's no reference surface the cutting edge is probably gonna move around the tubing if we try to pull it through so here's what I'd like to try I'm gonna cut a section of this bar stock off and I want to push it through the center of this tube but this bar is way too soft to have any sort of cutting edge on it so I want to actually weld a cutting edge on the outside circumference of this bar and then we'll we'll sharpen it on the grinder and then we'll try to push it through here's the slug that I want to push through the pipe I want to put a chamfer all the way around 360 degrees around this edge I'm looking for maybe a bevel that looks something more in line with the body something like that that way we can fill it in with the metal and they come back and grind it or put it in the way and turn it back to diameter again I'm gonna be using this UTP 711 B this is a hard facing rod used in excavating equipment I keep it listed around the shop for all sorts of good stuff the UTP specs I think it says it'll get to like 60 Rockwell which is pretty hard I don't want to arc weld this weld seam around the top I actually want to use this as a TIG filler so I'm gonna knock all the flux off of it and then use the TIG to actually apply this filler metal it's going to allow me to precision place the amount and the thickness of the weld bead I want a lot of material around the edge because I'm gonna grind it off so I'm gonna use the latex just to build up a big fatty weld on top of this edge just because I'm curious we're gonna hit this weld with the file see how hard it is it's not like super super super hard or you can tell this is just mild steel back here you hear it it's just soft quiet and here's the top how's that distinct hard skating feel to it so now the what I want to do is I'm just gonna grind this the shoulder square I want to square flat top cutting edge that way when this thing decides if it wants to twist inside of that piece of pipe that it will always have a continuous cutting edge to ride against alright there's the final slug the cutting slug I've only got about ten minutes into this so far and it feels pretty sharp to my finger hopefully it's strong enough to rip that well down to the inside of the pipe I don't know how's it gonna work is it knocking hard we're gonna find out did you look at that oh it's working guys [Music] Wow that's my finger yep more chips that worked actually really really good can barely feel at my fingertip works lick nice trick that worked better than I expected here's the slug there's a little bit of edge damage right there but I mean look at that's so that's a eighth of an inch now look how much more cutting edge I have I could use this slug over and over and over again well guys this actually worked really good way better than I expected this is one of the reasons why I really love metalworking I had no idea this it would actually work it's fun to be able to experiment and try new things hopefully this might help you on a problem you might have on the future trying to remove a weld seam I know I'm gonna probably use it again - so I'm gonna stash this little slug in my toolbox for next time and I'll catch you on the next one how many time I think I've said to me at least thirty times in this video sheesh tube tubing to be tube tubing tubing tubing tubing tubing tubing and tube tubing tube tubing the tube tube tubing tubing tubes tube tubing tubing our tubing tube a tube you

Channel: Fireball Tool

Views: 1,306,182

Rating: 4.9064755 out of 5

Keywords: tig welding, mig welding, how to, how to remove weld, how to remove welding from tubing, how to remove weld seam, tubing weld, how to weld square tubing, fireball tool, fireball, fireball tools, miller, welding tips, fabrication tips, how to fabricate, shaper, machining, how to weld, welding tips and tricks, tubing welder, tubing welding

Id: 3jr4Capx8XI

Length: 13min 14sec (794 seconds)

Published: Sun Aug 11 2019