Quote:
Originally Posted by glend
I can't see how a blob of silicon can pinch a mirror. It is not applied under any more pressure than that which pushes it out of a tube with a caulking gun. Once applied to the carrier it does not expand rather oozes into the vacant space between the mirror and carrier ring. If applied before the mirror the weight of the mirror will push it into filling the gap space. Silicon does not expand when curing, unlike some polyurethanes. Cured silicon will have much greater ability to compress than the rubber under the clips, it can only be there as a bumper in my opinion. Large mirrors have been supported by slings, posts with rollers and pads for decades. Get an answer from GSO.
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no it doesn't expand Glen, most varieties of the sodding stuff
shrink by a couple of percent on curing. Putting it into a gap like that seems to me to be asking for trouble - the mirror will be pulled three ways.
Hope you get it sorted Geoffrey.