[ATM] Mirror stuck on pitch lap

[Guy Brandenburg]

In my experience, once pitch gets stuck to the mirror, the only way to separate them is by freezing. If these other methods work, I'd like to hear about it.
Guy

Jerry <wa4guu at verizon.net> wrote: Francis

With channels I would not expect much trouble separating them. Usually just squirting water into the channels, mirror face up so the water settles in the concave and soaks between the lap and mirror should allow you to slide it by hand in 30 minutes or so. When you press a lap well and it is in intimate contact with the mirror, it will be "stuck" to some degree and might take some force to get it moving on the first stroke. Steady prolonged force, not short hammer blow type force. Hold the force on steady for a minute and give it time to start moving. If you are pushing by hand, hold on to it; don't let it shoot away if it lets go all at once!
The prolonged force probably has something to do with why the method Ulhas offered works. It may be that "prolonged" force is more important than "strong" force in separating the lap and mirror.
Gentle is a good idea. If necessary, there will still be time later for hammers, jacks, wood splitting wedges and pry-bars.



"Thus, from the war of nature, from famine and death, the most exalted object which we are capable of conceiving, namely, the production of the higher animals, directly follows. There is grandeur in this view of life, with its several powers, having been originally breathed into a few forms or into one; and that, whilst this planet has gone cycling on according to the fixed law of gravity, from so simple a beginning endless forms most beautiful and most wonderful have been, and are being, evolved."
- wtote Charles Darwin.
Guy Brandenburg, Washington, DC
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