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Old 02-11-2013, 10:31 PM   #11 (permalink)
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Quote:
Originally Posted by Menace View Post
Doc and Alpha,

Thanks for the reminder on burnishing. And given the info on the Elliott burnisher you listed, Doc, that is pretty impressive, even to a jaded finisher.

.05-.2 microns? Zoiks!

ANSI/CAMI 2000 grit is ~15,000-ish mesh. That's about 1 micron.

This burnisher produces a finish comparable to a mesh of over 100,000.

You can get abrasives lower than that, but wow. That's mighty smooth.

But again, is this the method used for stainless?
No. Stainless would wear out the rollers in a burnishing tool very quickly. You could maybe make a couple of barrels before needing to rebuild the tool. The cost would be astronomical.
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Old 02-11-2013, 10:46 PM   #12 (permalink)
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What kind of rollers does it use? Carbide?
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Old 02-11-2013, 10:49 PM   #13 (permalink)
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Tjd, that's quite a task. Good luck!

And thanks very much for the eclipse bore finish info.

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No. Stainless would wear out the rollers in a burnishing tool very quickly. You could maybe make a couple of barrels before needing to rebuild the tool. The cost would be astronomical.
As suspected, and as Doc noted.

Which means we are likely talking abrasive polishing for the stainless, again as Doc noted.

But to what degree? Hmn . . . .
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Old 02-11-2013, 10:56 PM   #14 (permalink)
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Lots of good info on the subject can be found here:
I found my old flex hone

Try not to bother agent smith about it though- I'm pretty sure he's tired of talking about this subject lol.
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Old 02-11-2013, 11:01 PM   #15 (permalink)
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Lots of good info on the subject can be found here:
I found my old flex hone

Try not to bother agent smith about it though- I'm pretty sure he's tired of talking about this subject lol.
Nope. This is pertinent to the secondary question, not the primary. That's for another day, likely close at hand. In the meantime, there is nothing in this thread treating of factory bore finishes, which is the question at hand. Thank you nonetheless.
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Old 02-12-2013, 12:43 AM   #16 (permalink)
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Since it's a steel substrate.... I would look into dicronite.
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Old 02-12-2013, 09:00 AM   #17 (permalink)
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Since it's a steel substrate.... I would look into dicronite.
As in, the dry lube?

Don't quite follow . . .
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Old 02-12-2013, 08:23 PM   #18 (permalink)
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Update:

It occurred to me that burnished aluminum will still lose finish in the anodizing process. Possibly there is a final process post anno? AGD used to do that, at any rate.

Also, did some checking and it seems Palmer's uses a bore->hone->abrasive polish routine.

And their stuff seems pretty nice.
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Old 02-12-2013, 08:52 PM   #19 (permalink)
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If you just want 'palmers good', then just use their process.

Their finish is just an industrial grade finish and isn't at all notable. But there also isn't any science indicating that you need a good finish at all.
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Old 02-12-2013, 09:31 PM   #20 (permalink)
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Nope. This is pertinent to the secondary question, not the primary. That's for another day, likely close at hand. In the meantime, there is nothing in this thread treating of factory bore finishes, which is the question at hand. Thank you nonetheless.
No doubt, but there is tons of stuff in there on roller burnishing. The technical conversation went pretty deep late in the thread.
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