P2080276.JPG So here is how I was taught and how I have done all my aircraft welding, so far. Machine used: Lincoln SP 130 Plus and SP 175 Plus Wire: L-tec Easy-Grind (ER70s-3) 0.23" diameter Gas: CO2-Argon mix (pretty common for mild steel) Procedure: (not too scientific) Optimize welder for ...

I think this is an old subject and I couldn't find a forum discussion for it. However, after watching the video "Mig Like Tig", I thought I would weigh in on the subject. First of all, I am a certified airplane nut. I build them and fly them (not RC stuff - the real thing). So, about 20 ye...