Re: silver solder?
He is not welding on the silver solder. He soldered a fuel fitting to the sheet metal using silver bearing solder and now plans on welding up the perimeter of said sheet metal to fabricate a fuel tank. He is concerned about the heat generated by welding which will travel through the sheet metal and may or may not be hot enough to mess up the silver solder job.
"It's a chinagirl. It's a sometimes fun little engine that often will break your heart. It's disposable.
Does not come with a fortune cookie."