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Old 10-11-2004, 05:53 PM
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Default Re: Specs for surface finishes?

> how many machine shops are willing to spend $2-5K on a
> surface roughness gage?

Yep, I wouldn't spend it on that tool. But I'd wanna be prepared for the geek like me that brings in his parts and states the finish he wants on them.

As I see it, shops know their tools and know what finishes they produce. I'm not sure I wanna work with a shop that doesn't, so I gotta ask. And if I gotta ask, I gotta know.

I'm really after an understanding what it's about and what it is supposed to be. At this point I speculate that the finish is specified by manufacturer of the contact materials, i.e. the gasket, ring or bearing manufacturers.
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