working with copper is a challenge. As a plumber, I would have oxy/acetylene bronze welded it, under the butt welds I would have pop riveted a tab under the joint, using stainless steel rivets to hold the corner down, then drilled out the rivets and then spot welded over the holes. Interesting to see silicone bronze welding though, nice work.
Nice Job but I agree, Copper can be difficult to deal with. Indian people are very nice and their food is Awesome. That was a great honor to be asked to make that.
Place a large aluminum chill block under the corner seams, tack every 5mm while using a cold chisel to manually press the seam flat against the aluminum while tacking. Rinse and repeat until you have a continuous bead. Use wood or whatever under the chill block to increase its height as you move to the upper seams.
Amazing work Richard. Living in West London, regularly visiting Southall, one of the largest Indian populations here in the UK and Europe and having Hindu friends, I am happy to say that I learnt something today from a man, self claiming to be of many origins. I know you will have enjoyed the wedding because they have a great celebration.
Personally i would have given 2 of the sides ears to overlap to the mating sides. Avoiding but joints. A pair of duck bill pliers could take care of the ear bends. Then i would have soldered the whole thing together. But then i'm coming from a metal and tile roofing background. So we worked on copper pans and flashing quite often and had the soldering equipment for it.
I think you did one hell of a job. I have welded for 30+ yrs and I have never welded copper. So there is always something to learn. I can see it is a very expensive lesson when you mess up. Take care and stay safe.
I never tried to mig weld copper with my 220 MTS. But after watching this I’m going to try it for myself. I’m and old school HVAC tech. I just guessing here, but possibly just using silver solder w/flux and a old school OXY/ACC touch with good regulators may have better butt weld results on this stuff. The right small flame 🔥 just might work out. Heating both copper sheets at the same time slowly with a small touch flame dabbing with silver solder should flow smoother compared to heat generated by the mig. Just food for thought.
I would have used TIG and si bronze or actual copper wire. That is the tool i have on hand. However excellent result. Good job man. I am Interested in this machine. Props.
mate if you ever get more copper work what i do is cut small strips of the same material you are using and use that as a filler rod, that way when you blend it you get a nice even finish, also tack your flats very 10 or so mm so it wont pull apart from you, and tig is the way to go. all in all great job
Hi sir, looks amazing, my question is to braze brass to brass , 10mm round rods to 10mm rods . I have done some mig brazing but too much spatters and difficult to clean .
@@42Fab Do you recommend any good welding machine so have less spatters for brass to brass braze. I do not mind paying for good welding machine specially for brass brazing .
I have rigged copper with good results accept I had to use argon and they recommend helium but there was a shortage of it when I did it last year not sure about now the helium makes the amperage way hotter because the copper soaks up the heat very fast, and all that’s required for filler wire is stripping copper wire from household Romex wiring or for your case something thinner
Curious as to why you didn't just tig braze this? Or even oxy braze it. If you oxy braze it with a 000 torch tip, the braze will just flow into the joints and be silky smooth. You may still have to deal with warpage due to how thin the material is.
what I on butt joints is the gun angle is to steep and argon coverage is not good need to more 90 deg don't get me wrong I have zero experience with copper plate on tube but looks good its hard to work with !! Do you how tig braze a lot less heat into the parts ? I would had tig brazed the mig to mush heat
guys, this is not a braze. This process should probably be called copper welding. It is not relying on typical braze joint physics, instead it is relying on weld physics. A braze joint would require penetration into a lap joint of significant size, from what is defined as a braze, you do not have braze strength here, here the strength mostly comes from a fillet, not from a lap.
the fluidity rating of the filler must be high and there must be a significant lap joint for something to be called a braze in my opinion. When people remark about how strong a braze is, that is what they mean.
the alloys used for copper welding vs true brazing are different. A true braze would use a silver solder or something that flows really well. Something that you butt together with a goopy melt is more like a weld.
Hey i´m seeing much spatter. could it be that the polarity is wrong? you know like welding with no gas flux wire you have to change the polarity otherwise you are getting much spatter... My theory is that if you change that you increase your economic use of the wire. would you confirm that?
I would agree if it weren't for the fact the recipient didn't want to see solder joints, which I find reasonable as they're ugly compared to a SiBro joint that nearly blends in
Just because you can weld copper with MIG.. does not mean its a good idea to do so. If the apperance is important maybe TIG would do a better job and its problably alot easier too because you get more control and leaves more room to deal with mistakes. You do know why you use MIG/MAG right? Its for increased production, nothing else; it gets the job done faster thats the only benefit. And I think youre actually welding that, not brazing.
@@janeblogs324 Alright, just looked as if he got complete fusion on some parts maybe he didnt. It got so hot he even burned holes in it, are you really sure? Definition welding: "join together (metal parts) by heating the surfaces to the point of melting" Definition brazing: "melts the filler material but does melt the base material, does not create a complete fusion" (means you just barely melt the surface). If the base material is so hot, there are holes in it that means you passed its melting point and there should be complete fusion.. can you really call it brazing then? I know you can call a dog a horse but it still does not make it a horse.
@@42Fab Great so with other words youre improperly using a method called brazing to weld with? I have to assume that your filler material copletely melt together with the base metal if you blow a hole in it. Because, that happens before you blow a hole in it right? Ok I want proof can you cut that piece of thing up so we can have a closer look at the welds. (its a joke dont do it).
