How To Weld Gun Metal. Brazing should be ok if you use a low temp flame and wire. Most TIG welding machines have a dial or control to allow you to precisely set the amperage.
Aluminum wire is much softer than steel and is hard to feed very far thru a liner. Quick hits with a migtig welder will probably work and not jeopardize barrel integrity - but itd probably look like shit. A Heat the end of a 18 in.
More Tips for Spool Gun Mig Aluminum Welding spool guns make me feel powerful.
Aluminum wire is much softer than steel and is hard to feed very far thru a liner. If the damage is too deep or beyond the files ability to fix it I have to add tig weld to the affected area. Feel free to check out Vulcan Gun Refinishing on YouTube for examples of this. Sand and Apply Refinish.