JeffWard Posted January 14, 2009 Share Posted January 14, 2009 I have an older, cheap, double-barreled 12 gauge that I plan on chopping into a "coach gun", just for fun, and a simple home-protection piece. To chop the barrel, I'll need to re-blue the end. Has anybody done this? Tips? Lessons learned? Thanks! Jeff Link to comment Share on other sites More sharing options...
larry cazes Posted January 14, 2009 Share Posted January 14, 2009 As long as everything is prepped right brownell's cold blue has always worked well for me. The key is to clean the part to be blued very well with solvent. Link to comment Share on other sites More sharing options...
Toolguy Posted January 14, 2009 Share Posted January 14, 2009 The best way to do this is to hacksaw it off about 1/8 inch longer than you want to end up, then mill the end square with an end mill. Don't try to end mill the whole thing off, as this can cause the barrels and ribs to separate and get bent up. If you don't have access to a mill, you can carefully cut it close with a hacksaw and file the end square, using a square to check your progress with the file. You will need to fill the gap between the barrels with something. You can use epoxy based fillers like JB Weld or lead solder. The cold blues I've had the best luck with are Brownell's Oxpho Blue and 44-40 Blue. Best of Luck. Link to comment Share on other sites More sharing options...
Matt Cheely Posted January 14, 2009 Share Posted January 14, 2009 Just getting the tanks and salts to blue is going to cost a lot more than finding someone to reblue it for you. Link to comment Share on other sites More sharing options...
Jake Di Vita Posted January 14, 2009 Share Posted January 14, 2009 Jeff LaFave recommends using a porta-potty. Preferably at Area 2. Link to comment Share on other sites More sharing options...
Carlos Posted January 14, 2009 Share Posted January 14, 2009 Blueing is a tricky and toxic art (not to mention very costly to start up). If you must reblue, I agree - contract it out. A much easier and more reliable alternative is Black, manganese oxide parkerizing (NOT zinc - which is grey). Link to comment Share on other sites More sharing options...
Toolguy Posted January 14, 2009 Share Posted January 14, 2009 I think he is just rebluing the cut off ends. A Q-Tip and some cold blue will do fine for that. Link to comment Share on other sites More sharing options...
JeffWard Posted January 14, 2009 Author Share Posted January 14, 2009 I think he is just rebluing the cut off ends. A Q-Tip and some cold blue will do fine for that. I'm just touching up the ends on a sawed-off shotgun.... LOL JB-Weld in the gap, q-tip cold-blue on the end, and tapping a new bead for the end... maybe a red-dot... kidding. Jeff Link to comment Share on other sites More sharing options...
Triggerbender Posted January 15, 2009 Share Posted January 15, 2009 For small touch up jobs I have had good success with Birchwood Casey Perma Blue Paste. Clean ALL oil off surfaces rub in with a clean nylon toothbrush until you get an even color. Was told the toothbrush trick by an old timer, said cloth, Q-tips, and alot of other things you would apply with have some natural oil in them that hampers the bluing action of the chemicals. Don't know for sure but the guy never lied to me before . So I grind err in with the brush and get better result than the other ways I tried. As always YMMV. Link to comment Share on other sites More sharing options...
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