Re: [ATM] PVC fitting mirror-cell.

[Charles Mitchard <charlesmitchard@iinet.net.au>]

PVC and silicone RTV do not mix. The bond if you are extremely lucky and do 
not stress of move the items may last a week or so.
Definitely do not use as the only fixing for the mirror or secondary if 
using PVC or in general most other plastics.
As Kurt states, it peels off at the slightest excuse with no adhesive 
properties.
Charles


>What are the experiences of the list with silicone and PVC?
>
>Kurt
>Nixa, MO
>
>
>
>
>At 09:19 AM 4/17/04 -0500, Danny F. Barnes wrote:
>
>>Hi there,
>>
>>New to list and ATMing, starting with a 6" reflector. When it came to the 
>>mirror cell, I made something out of PVC fittings, toilet flange 
>>floor-plate things. Seems like it will work, has this been done before, 
>>and if so, has it worked out? Is the PVC stable enough in varying temps 
>>to keep the mirror in collimation?
>>
>>Planning on attaching the mirror to the cell with silicon.
>>
>>Images are here: 
>>http://www.geocities.com/dannybarnes@sbcglobal.net/Desktop.html
>>
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