I've stripped a couple of ribs from LC Smiths. Both had rosin flux in sufficient quantity to cover all of the fully tinned surfaces of the barrels between the ribs. Neither had a speck of rust. I think at least LC Smith had a standard process of fully tinning between the ribs which protects the steel from corrosion.
I've tossed around the idea of building a soldering jig for barrels but found wiring them together works fine. Possibly for stripping, a jig might be helpful in holding the barrel together with enough pressure to keep the spacers in position in the event too much heat is applied in stripping the ribs. But I didn't have any problem overheating, even though I'm a novice at it.
