Tangentially related, I can't remember if you have a TIG or not, but have you played with silicon bronze rods? Its the welding equivalent of JB Weld, you can just slap it on anything.The boy broke the tool rest on his lathe, so I asked him to try and weld it back together before we went to look for another one.
He left the ugliest booger welds I'd ever seen, looked like he'd forgotten to even turn the gas on.
I hit it with a hammer and it failed immediately.
So I ground his awful welds back, ground out a little more to give myself a spot to fill up, set the speed way lower, actually turned the gas on, and the voltage all the way high, and actually got good penetration and strength.
So now he's got a fuckin' tool rest again. Idjit.