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Rifles, Reloading, Optics, Equipment
Gunsmithing
Media Blasting
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<blockquote data-quote="julietvictor" data-source="post: 458952" data-attributes="member: 29543"><p>I use Aluminum Oxide for surface prep before duracoating. Works great, nice rough uniform finish, duracoat adheres well. I usually use glass media for stainless steel parts. It creates a nice semi-matte sheen. Very uniform. I have been lazy once or twice a did a quick blast job with glass beads then followed woth a duracoat finish. Does NOT adhere well at all. If your media gets dirty or stops cutting, replace it. It is a whole lot easier to replace it when it gets "worn out" than standing there hunched over for twice as long trying to do the same job. </p><p> </p><p>One time I forgot to plug the muzzle end of a Stainless varmint barrel before glass bead blasting. Big mistake. Had to have the Muzzle cut down and recrowned. The "gunsmith" (what do you call an incompetent gunsmith?) that did the crown- I wanted an 11 degree target crown- cut the crown at, around 30 degrees with a 45-60 degree chamfer. None of it was concentric- not even close. Had him redo it, same thing. I had to buy a PTG 11 degree crown tool, came out perfect, but wasn't cheap. It now shoots again, actually better than before. Lesson learned- plug the muzzle and chamber, protect your threads.</p></blockquote><p></p>
[QUOTE="julietvictor, post: 458952, member: 29543"] I use Aluminum Oxide for surface prep before duracoating. Works great, nice rough uniform finish, duracoat adheres well. I usually use glass media for stainless steel parts. It creates a nice semi-matte sheen. Very uniform. I have been lazy once or twice a did a quick blast job with glass beads then followed woth a duracoat finish. Does NOT adhere well at all. If your media gets dirty or stops cutting, replace it. It is a whole lot easier to replace it when it gets "worn out" than standing there hunched over for twice as long trying to do the same job. One time I forgot to plug the muzzle end of a Stainless varmint barrel before glass bead blasting. Big mistake. Had to have the Muzzle cut down and recrowned. The "gunsmith" (what do you call an incompetent gunsmith?) that did the crown- I wanted an 11 degree target crown- cut the crown at, around 30 degrees with a 45-60 degree chamfer. None of it was concentric- not even close. Had him redo it, same thing. I had to buy a PTG 11 degree crown tool, came out perfect, but wasn't cheap. It now shoots again, actually better than before. Lesson learned- plug the muzzle and chamber, protect your threads. [/QUOTE]
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