proper chemical / glue for 11/45 switch repair? - test-drb@ccmp.vtda.org

15 Feb 2015

...
  Message: 27
 Date: Sun, 15 Feb 2015 15:24:13 +0000
 From: tony duell <ard at p850ug1.demon.co.uk>
 To: "General Discussion: On-Topic and Off-Topic Posts"
 	<cctalk at classiccmp.org>
 Subject: RE: proper chemical / glue for 11/45 switch repair?
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 	<A8192EF71C5C4946A240D25EDC8F9448027B4533 at EXMBX16.thus.corp>
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  An -11 owner would be able to say for certain,
but the old model
 airplane solvent glue was methyl chloride.  It's also in a lot paint
 stripper as well.  "Tenax" model glue is a name that comes to mind. 
 In the UK, dichloromethane (same stuff) is sold under the brand name
 'Plastic Weld', It is _by far_ the best way of mending plastics that it
 will
 disolve. And I think DEC front panel toggles fit into that category.

 That said, trying to glue the pivot pins back on to the toggle is going
 to be (IMHO) a waste of time. The area is just so small. Personally, I
 would
 drill through the toggle (make sure it's in the exact right direction) and
 put
 a metal pin through.

 -tony 
It has been done! I did it on my switches on the old 8/L.

http://www.abc80.net/zz/pdp8/DSC_9858.JPG
http://www.abc80.net/zz/pdp8/DSC_9864.JPG
http://www.abc80.net/zz/pdp8/DSC_9865.JPG

I used the core from a copper wire 1,5mm2 since the diameter turned out to
be perfect.

/Anders