21 Mar
2016
21 Mar
'16
4:56 p.m.
Interesting indeed; that explains why the two tiny nylon gears in almost every one of the
small plotters based on the little Alps unit (Radio Shack, Commodore, Atari etc.) have
split...
m
----- Original Message -----
From: "Chuck Guzis" <cclist at sydex.com>
To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at
classiccmp.org>
Sent: Monday, March 21, 2016 7:37 PM
Subject: Re: Restoring Nylon parts (like the card guides in a PDP-8a chassis)
On 03/21/2016 04:25 PM, Jules Richardson wrote:
Interesting... so boiling them can make them
expand too much, leaving
them for a few weeks will allow them to contract, but they
"remember" their manufactured size, such that a few weeks after they
they aren't trying to return to their shrunken, pre-boiled state?
Interesting. If water evaporation accounts for the dimensional
instability, why not use something that doesn't evaporate quite as
easily? Say, ethylene glycol or a silicon oil?
--Chuck