Preparing parked MB for silver soldering?

[303smle]

What's the best way to clean the internal threads of a parkerized muzzle brake so in can be silver soldered to the barrel, other than sand blasting?

[sixplusone]

[ September 04, 2001: Message edited by: sixplusone ]

[sixplusone]

3/4 " of the bristles (leave the handle alone) :mad:

[W.E.G.]

Naval jelly will remove parkerizing or blue.

Apply with a Q-tip. Rinse off with hot water.

[303smle]

Thanks for the help.

[Rule .308]

I have a bench top drill press, so I chucked a 12 gauge bore brush in it, spun it up and stuffed my brake on it until it was sufficiently cleaned. Works real well for me, solders them up nice.

[Nachoman]

On a related note, is soldering sufficient for the BATF, or does the MB have to be pinned as well?

[Dan at VOW]

BATF requires the use of 1100 degree silver solder. They consider that to be permanent attachment. HTH, Dan.