I asked this on diy but the board is slow so I'm not getting any responses
https://www.amazon.com/FEMEROL-Welding-Portable-Inverter-Synergic/dp/B0F1K4G6R7 I'm trying to weld two tubes together, butt to butt with one overlapping part of the other like pic rel, and one is made out of 4140 and the other is mild steel due to it being the only material available in the specific size
I have 0 experience welding but I know somebody who does (but their welder no longer works so I need to buy a new one)
what I understand is that I have to heat up the 4140 section (I have a gas forge or a propane torch available to use, am open to rigging something up if the soot would be an issue)
and it can't warp or anything, I'm hoping it wont be an issue anyways since the mild steel tube is 3mm thick and the 4140 tube is significantly thicker but i can never be too safe
>just hire somebody to do it
it's for a gun receiver, not illegal to do myself or with a friend, I just can't pay somebody to do it for me
if its impossible to do with the mild steel tube just tell me, but it would mean a loss of $240 worth of machined metal
