To stop distortion of the secondary you need a flexible, gap filling glue so the silicone types are perfect. Make sure you leave a gap between the mirror and the holder, I use some 3/32 drills but thin nails would work. Use three small dobs of glue then remove the spacers when the glue is cured.
Cheers
Last edited by rmcpb; 31-05-2007 at 12:12 PM.
Reason: Get the diameter of the drill right!!
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