Re: [ATM] mirror stuck

[Guy Brandenburg <gfbrandenburg@yahoo.com>]

Mirror in freezer for a few hours, taken out, use rubber mallet gently, let it warm up in the air, put it back in, repeat if necessary. Should do it. But you'll have to redo the pitch lap. Next time put more polishing compound between the lap and the mirror, and dont let it sit in one place so long. Also use onion sacking inbetween.

Steve Beccue <lsteve@beccue.com> wrote:  Perhaps try very warm water for a few hours, followed by gentle
coersion. If it moves even a little, keep up the pressure until
they are free. (I wouldn't use a mallet myself.)

I've also heard a garden hose with pressurized water aimed between
mirror and tool works.

Good Luck,

Steve Beccue
steve@beccue.com

On Tue, 22 May 2007, horace r davis wrote:

> placed mirror in water over night water up on pitch but still stuck. Put
> in freezer to day pulled out hit with rubber mallet on edge of tool still
> stuck don't want to try to pry apart fear of chipping mirror after mirror
> warms up can I put in sun to heat pitch would this work it looks like I
> had a lot of coe between mirror and pitch.
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Guy Brandenburg, Washington, DC
My home page on astronomy, mathematics, education:
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or else 
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