In order to make fine traces with Nickel Print conductive paint I used
paper matches. Yeah, the kind you light your Camels with.
Cut the base of the match off at a 45' angle. This gives you a nice point
and the paper holds enough paint to make a halfway decent brush. They are
only good for a trace or two so have a full pack handy.
I've used tape to cover the traces but when you peel the tape up you peel
the traces with it. The scalpel approach works pretty well but leaves
ugly traces and is hard to do once the paint is dry. I use the matches
and the scalpel together in real-time so I'm scraping at wet paint.
I learned this method fixing my Atari 130xe's keyboard. The overlay's
were notorious for a bad paintjob. Even new overlays seem to last only
five years or so at most before requiring some kind of fix. After about
13 years I finally broke down and bought new keyboards for all my 130's.
So far so good but I still have a bottle of Nickel Print on hand for the
eventual fix.....
In <200005061333.e46DXwr18305_at_admin.cgocable.net>, on 05/06/00
at 11:54 AM, jpero_at_cgocable.net said:
>> Date: Sat, 6 May 2000 07:45:59 GMT
>> From: pete_at_dunnington.u-net.com (Pete Turnbull)
>> To: classiccmp_at_classiccmp.org
>> Subject: Re: HP calculator thermal printheads (HP82143, etc)
>> Reply-to: classiccmp_at_classiccmp.org
>> On May 6, 0:24, Tony Duell wrote:
>> > On Fri May 5, 23:16, Pete Turnbull wrote:
>>
>> Ah. Given the thickness of the paint, painting tracks would be difficult,
>> even with a good-quality fine brush. The only other suggestion I can think
>> of, is to paint a wide strip, covering all 8 tracks, and then use a scalpel
>> blade (and some patience) to gently scratch gaps between them.
>Ugh, that is exact same thing what I did many times in my retired
>compaq LTE 386s/20 on one of two keyboard cable. Is there a better
>quality kind than this conductive paint I got? Then name one!
>Wizard
>
>> --
>>
>> Pete Peter Turnbull
>> Dept. of Computer Science
>> University of York
>>
>>
--
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Received on Sat May 06 2000 - 10:54:55 BST