22 Sep
2003
22 Sep
'03
7:57 a.m.
I find Loctite 406 superglue - for plastics and rubber - good for most
plastics - sometimes you can get a damn near invisible mend with it. My
local plastic upvc window centre sells it at about ?4 for a 20g bottle. Do
you have this glue in the states ?
Geoff.
----- Original Message -----
From: "Tothwolf" <tothwolf(a)concentric.net>
To: <cctalk(a)classiccmp.org>
Sent: Monday, September 22, 2003 9:14 AM
Subject: Re: Reviving and connecting an ASR33
On Sun, 21 Sep 2003, Ian Primus wrote:
Some of the keys are cracked. A couple of the
keytops have cracked out
from the lettering, most notably the "Break" key, which gets stuck down
because it is now slightly wider.
The paper advance knob is cracked. I think I can
glue it, but otherwise
I will need to track down another.
The cover is cracked, but that isn't really a big deal. I should be able
to glue it back together. What type of glue is recommended for teletype
plastic? Just regular wacky glue, or some sort of epoxy?
It all depends on what kind of plastics need to be bonded.
For ABS plastics, a Methylene Chloride based solvent works very very well.
(It does not work very well for ABS+PC blends, however. I seriously doubt
you have any ABS+PC in the ARS33 though, since it is a pretty modern
plastic.) Plastic model cement is pretty much useless these days, as they
have removed nearly all of the solvent type chemicals from the product.
Superglue/wacky glue/etc tend to be a very bad idea for most plastics, as
they don't bond to it well and cause major cosmetic damage.
If the keys/knob are bakelite, you might want to talk to folks who repair
old radios, as cracked knobs are a common problem. I've not had to repair
bakelite yet, so I can't recommend a specific method. I do know that you
can't bond bakelite with a solvent as you would more modern plastics. Some
type of epoxy might be the best method for bakelite.
-Toth