Re: [ATM] Coulter secondary adhessive

[Mike Lockwood <melockwo@uiuc.edu>]

Hi,

> Lawrence D. Lopez wrote:
>>My friend want to remove the secondary
>>from the "holder" to which it is glued.
>>Does anyone know what the glue might be ?
>>He thinks it is epoxy but I would have expected
>>that to deform the secondary.
>>Any ideas on how to remove the secondary ?

Michael Lindner wrote:
> On my Coulter is was double sided tape. I worked at it with a razor 
> blade for a while until I could pull it off.

I tested a secondary on a similar 13.1" Coulter.  It was also secured 
with double-sided tape, secured so well that it was quite difficult to 
separate the mirror from the metal bracket!  I also recall some type 
of mesh tape, similar to drywall tape used to prevent cracks, that was 
also on the back of the secondary.

Using a small flat and my interference testing booth, I tested the 
mirror before and after it was "unstuck", and the figure did not 
change much at all.

So, for the benefit of Coulter owners, it appears that the tape is 
better than the other adhesive mentioned by Jarvis in his later message.

	Mike Lockwood

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