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[ATM] Primary Mirror Retainers
- Subject: [ATM] Primary Mirror Retainers
- From: artbianconi at blast.net (artbianconi@blast.net)
- Date: Mon Mar 1 23:22:56 2004
- In-Reply-To: <200403010256.i212uTr5077988@fireball.blast.net>
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<div align="left"><font face="Arial" color="#007f00" size=2><span style="font-size:10pt"><i>So I though
why not RTV a nut to the centre of the mirror back. Then</i></span></font></div>
<div align="left"><font face="Arial" color="#007f00" size=2><span style="font-size:10pt"><i>through
a hole in the mirror support pass a screw which locates into the</i></span></font></div>
<div align="left"><font face="Arial" color="#007f00" size=2><span style="font-size:10pt"><i>RTVed nut. </i></span></font></div>
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<div align="left"><font face="Times New Roman" size=2><span style="font-size:10pt"><b>Fasteners work
by spreading the loads over a surface (s) that is
perpendicular to the axis of tension. They also must have some way of being
secured to the assembly with a tool. The resulting six flat female fastener is
often the same diameter as the head of the matching male part. </b></span></font></div>
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<div align="left"><font face="Times New Roman" size=2><span style="font-size:10pt"><b>Glue a nut to
the back of the mirror and the mirror will no longer sit flush
against the back of the cell. The clearance hole you must make in the cell
will thus be larger than the screw head. Without an additional device, like a
large diameter washer, it won't work.</b></span></font></div>
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<div align="left"><font face="Times New Roman" size=2><span style="font-size:10pt"><b>Art Bianconi</b></span></font></div>
<div align="left"><font face="Arial" size=2><span style="font-size:10pt"> </span></font></div>
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