I need to do a frame repair on an old truck. The steel is 5 gage. So I'm thinking about heating the repair plate so I can bend it into the shape I need, then mig welding it back into the frame. I'm wondering what effect heating the steel for bending will have on it. Will it make it hard and brittle or soft and weak. Will heating have any effect on it for welding? This repair is right where the front leaf spring and bumper mount are located so the repair has to be strong and reliable. The truck's frame looks to have been hit pretty good at some point in its life and had some really crappy "repair" work done. Such as welding in a bolt to make up for a gap in the steel. What I'd like to do is cut out this "repair" and weld in new steel to bring it back to the way it should have been. I've done lots of welding and cold bending of sheetmetal, but nothing on this scale of thickness or structureal integrity. Thanks Buck PS Please don't tell me to look for a replacement frame or a donor for the parts as this is not a option on this frame.