I crimped the end of a piece of stainless steel tubing in my vise for a thermowell project I am working on, but it is still not air tight. Can I snip a piece of lead free solder and drop it down the tubing and then heat the end of the tubing over a propane burner? Do I need to drop flux down the tubing first?
I don't have a torch or I would attempt to solder on the outside of the crimp. Thanks!