My wife loves her old Lawn Boy push mower; it's very lightweight (esp. since I removed all the Rube Goldberg self-propelled mechanism) and easy to start - still! However, the magnesium deck has developed a crack that runs across the front of the discharge chute. I was going to bolt a metal plate across the crack as a repair, but it would be a really sloppy patch.
The more I look at it, the more I want to weld it, but I know what Mg does when it gets hot enough to burn! Is there a way to do a decent join without destroying the mower? I only have a Lincoln tombstone AC welder, a cheapo HF DC Tig, and O/A gas setup. I also still have some of those "miracle" repair sticks that used to be touted at flea markets ("fix any Al device with just a propane torch - developed by NASA").