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REQUEST: Re-threading a cobalt muzzle device?

The Chief

The Chief

Farkën Snêekee Bastïtch
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Okay, so I've got an OSS muzzle device, and it's made of cobalt. Currently, it is threaded 1/2-28...I need it re-threaded 9/16-24 (RH); OSS doesn't make one in that TP yet.

Now, it is a suppressor mount, so it pretty much needs to be perfect. What say you--anyone have the tooling for such an operation? Cobalt is an out-of-the-ordinary material, and it's quite hard... Just a thought. Anyone? TIA, all... --Art
 
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SAFN49

None
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You may want to contact some machine shops that already work with cobalt. I would think the tooling would cost more than the re-threading operation.

Tool life is measured in minutes.

Cemented carbide inserts, especially fine-grained inserts, are suitable and broadly applicable along with SiAlON ceramics and, to some extent, whiskered ceramics.

http://www.americanmachinist.com/cutting-tools/tips-machining-super-alloys
 
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