Removing paint & magic marker graffiti from computer cases

From: Richard Erlacher <edick_at_idcomm.com>
Date: Fri Apr 23 12:48:58 1999

A really fine-grit scouring powder like "Bon-Ami" might be what Hans wants
to recommend. Those really tough plastic scouring sponges would be
appropriate in most cases. You've got to be sure you don't scratch the
surface, though.

Dick

-----Original Message-----
From: Hans Franke <Hans.Franke_at_mch20.sbs.de>
To: Discussion re-collecting of classic computers
<classiccmp_at_u.washington.edu>
Date: Friday, April 23, 1999 8:33 AM
Subject: Re: Removing paint & magic marker graffiti from computer cases


>
>> I've got a couple of Commodore PETs that need to be cleaned up.
>> I'd like to restore them to like new condition...the only problem
>> is some markings on the systems.
>
>> Any ideas on how to remove from the metal case (with damaging the
>> painted surface underneath)
>> - Spray paint (numbers)
>> - Permanent magic marker (more numbers)
>
>Depending on the Modell - if it's one of the SK/LP/HP CBMs,
>I recomend a ... ups, now I got problems since I don't know
>exact american namings and brands - I would recomend ATA
>(thats a brandname, but also used generic for most brands
>of not aggressive Scheuerpulver (scpuring agent (?)) with
>an aprobiate hard sponge (non metall), since the 'rough'
>surface accepts microscratches, and the coulour used is
>thick enough to allow this procedure - don't use any kind
>of sandpaper.
>
>For Metall case PET/CBMs with the rough surface the same
>method might be usefull, but you have to prpare the Scheuer-
>pulver with water in a seperate place, to avoide the first,
>hard contact - also add some sadditional soup and use a soft
>sponge with less pessure - you might need to polish it later
>on with polish materials for cars.
>
>For the smooth surface (early) models, I recomend only soap
>and a sponge - and a real lot of rubbing. Also some helpers
>as used for car paint refurbishing are usefull.
>
>All this will only work to remove non aggressive markers.
>If the markers have interacted deeply with the paint, and
>or if spray paint is used, you have to do an repaint job.
>take a medium to fine Schmirgelpapier and remove the unwanted
>paint, until is is completly gone - try to take of material
>all over at the same rate. if done well it might be enough
>original paint still on the surface that you only need to
>add a new gloss-paint layer - if not, considere to unpaint
>whole case and give it to a car painting company for the
>job to do it (including new paint of course.
>
>The main problem is that you have to prepare all parts the
>same way, since it would look terrible if only one side of
>the pet is 'redone'
>
>Gruss
>H.
>(There has been an Idea of a workshop on Computer cleaning
>vor VCF 3.0 - Sallam ?)
>
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Received on Fri Apr 23 1999 - 12:48:58 BST

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