Posted 1/11/2013 21:10 (#2815990 - in reply to #2815937) Subject: Re: Pre-heating thick metal before welding
I would have welded as you did but no pre heat. I hold the rod on the first pass closer to the heavy steel.I have used my propane space heater to pre heat aluminum. It is easy to heat a large area fairly quickly with one. Also not a sharp temperature change at the edge of your heat like with a torch.
Pre-heating thick metal before welding
