Wondering if you guys could share tips for welding stainless steel tubing. I'm having issues with the tubing bending out of shape because of the heat. My dilemma is that if it's not hot enough we can't get penetration but with too much heat we start getting warpage. Trying to find the right balance ...

I've done several jobs welding cast iron manifolds for different vehicles and I was wondering how other welders fill the cracks? I use nickel-copper rods and wondering if tig welding would be a better method of welding cast iron. Setting up some test for verifying which welds holds better would be v...