On Sun, 14 Dec 2003 19:40:17 +0000 (UTC), Alan Rothenbush
wrote:


Can two sliding surfaces be too flat to slide nicely ?

snip

The phenomenon you describe is well known to amatuer telescope makers
who discover a marked increase in difficulty when glass surfaces being
ground get close to actual optical levels of flatness. Mirrors have
been destroyed by the measures taken to separate them from grinding
tools, and lapping tools are normally provided with grooves to prevent
binding of this sort.

Suggestion: use a lower viscosity oil. It will flow more freely into
the space between the facing surfaces. If things are really stuck as
they are, use a little heat as well as adding lighter oil...

Al Moore