Re: [ATM] resurfacing a glued & flexed mirror?`

["Thomas Janstrom" <thomas@moiler.com>]

There are vacuum compatible epoxies and rubbers, but they are quite pricy.

There is also some evidence from a list member (James Lerch) that RTV can be
exposed to vacuum and not compromise a coating being applied at the time,
but I don't really know how much RTV was present nor how the coating has
performed over time (this occurred a year or two back now).

SO there might be some options for a more permanent setup with respect to
getting your optics re-coated down the track.

Cheers, Thomas.

-----Original Message-----
From: atm-bounces@atmlist.net [mailto:atm-bounces@atmlist.net] On Behalf Of
Bill Kelley
Sent: Wednesday, 16 January 2008 9:35 AM
To: Guy Brandenburg; atmlist
Subject: Re: [ATM] resurfacing a glued & flexed mirror?`

You remove all "softish stuff" and re-attach "softish stuff" (rubber for 
one) after the new coating.
Bill

Subject: [ATM] resurfacing a glued & flexed mirror?`


> Someone raised an important point. If you glue a soft-ish piece of stuff 
> to the back of your mirror, and you use that soft-ish stuff to flex, then 
> how will that affect the fact that at some point you will need to 
> re-aluminize it?
> You would need something that doesn't outgas and doesn't expand when you 
> put it into a vacuum. Anybody have any good suggestions here?
> Guy
>
> 
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