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polishing preps

 
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czeqm8



Joined: 24 May 2006
Posts: 125

PostPosted: Thu Mar 15, 2007 8:34 pm    Post subject: polishing preps Reply with quote

Is there any reason to polish preps other than to make them pretty to photograph? How polished do they need to be? What is the rationale?
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john kanca



Joined: 14 May 2005
Posts: 6341

PostPosted: Fri Mar 16, 2007 9:03 am    Post subject: Reply with quote

Unless they're grossly rough, labs don't really need them really smooth.
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czeqm8



Joined: 24 May 2006
Posts: 125

PostPosted: Fri Mar 16, 2007 6:18 pm    Post subject: Reply with quote

How rough is too rough? Any maximum grit recommendation that should not be exceeded for a final prep?
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john kanca



Joined: 14 May 2005
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PostPosted: Fri Mar 16, 2007 9:29 pm    Post subject: Reply with quote

Nothing standard.

I imagine that something die varnish cannot smooth off is too rough, but I don't know if we have anything that coarse.
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czeqm8



Joined: 24 May 2006
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PostPosted: Fri Mar 16, 2007 9:47 pm    Post subject: Reply with quote

Thanks John
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