I will be brazing a receiver for a derringer kit. Have never done it before. Have access to an oxy/acetylene torch but need advice about which solder to buy. The ATF won't let the kit vendor give instructions.
A friend of mine says silver solder is the way to go but there are many options. There are the expensive rods that work at low temperatures.Only 1,150 deg. ~$80
Or standard solder from Home Depot that is ~$30 for 5 sticksSome of them only require propane, not O/A.
These are the 11 gauge sideplates.In case you're wondering, this is an old catalog and the prices have gone up significantly.
I downloaded the "Brazing Book" referenced in the instructions. It's 129 pages. Too much information.