Re: [ATM] Ultrathin Project update

["Arjan te Marvelde" <arjan.te.marvelde@hetnet.nl>]

Richard,

> You'd end up with a near perfect support for you mirror for polishing
> which must spread the load about as well as possible. Heck, maybe you
> can even lap it in with a few wets if it needs it. Maybe the balancing
> lump that forms in the concave side can be used for your lap.

Possibly the convex side is not a figure of revolution or it may have
irregularities. You can have a "nearly" perfect rigid support then, but
enough off to cause sag and print-through.
A way to compensate for small irregularities could be to have thin pads that
don't give a lot but just enough to let the support match the back surface.
The material could for example be chamois (the fabric kind, not the natural
leather).

   Arjan

_______________________________________________
ATM mailing list http://www.atmlist.net/