Quote:
With thin metal you should have a heat sink behind when you are welding... I use a piece of copper but ally works just as well... If you are cutting a piece out and replacing with new stell you shouldn't be burning many holes but if you are trying to fix honey comb rust holes you will blow them away... Heat sink is the answer to welding thin steel ;)
You sir, are a genius.
Now i feel like a retard for not thinking of it in the first place :(