[Coco] de-yellowing cases?

[Steve Batson]

personally, I like the idea of painting them. I found close matches to the white used on the CoCo 2s and used spray painted designed for use on plastic. It's close enough in color, it won't degrade the plastic, but probably protect it. I seriously doubt it will yellow anytime soon if at all. I let mine dry for several days and it looks / feels fine.


On Aug 21, 2015, at 7:45 AM, Bill Loguidice <bill at armchairarcade.com> wrote:

> My only devil's advocate statement with using chemical methods to de-yellow
> cases is that whether Retrobrite or some other technique, it's still only a
> temporary solution, and the yellowing does return. Repeated applications
> may in fact degrade the plastic.
> 
> My opinion is that while it doesn't look great, I'd rather keep my systems
> yellowed in order to maintain the structural integrity. The alternative of
> course is to get new cases manufactured, but that's almost certainly an
> incredibly expensive proposition (not to keep using the C-64 and Amiga as
> examples, but they're relevant; the C-64 Kickstarter succeeded, while the
> Amiga 1200 one didn't--they're still going to try and proceed with the
> project. Many of these newly manufactured cases involve either creating new
> molds or recovering the original molds, either of which is wildly expensive
> (the upcoming Retro VGS is using old Atari Jaguar molds for its case
> design, by the way). I'm sure the CoCo case molds are lost forever.
> 
> -Bill
> 
> ========================================================
> Bill Loguidice, Managing Director; Armchair Arcade, Inc.
> <http://www.armchairarcade.com>
> ========================================================
> Authored Books
> <http://www.amazon.com/Bill-Loguidice/e/B001U7W3YS/ref=ntt_dp_epwbk_1> and
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> ========================================================
> 
> On Fri, Aug 21, 2015 at 10:27 AM, Gabriel Holland via Coco <
> coco at maltedmedia.com> wrote:
> 
>> I've used retrobrite on a CoCo2 with pretty good success.
>> As far as the 1, if it's just dirt, I like using baby wipes or warm water
>> with Oxyclean and a toothbrush on my plastics.
>> 
>> 
>>     On Friday, August 21, 2015 10:22 AM, Bill Traynor <btraynor at gmail.com>
>> wrote:
>> 
>> 
>> Is there a known working way to fix discoloration on old CoCo cases?
>> I'm considering this method on a yellowed CoCo2 case:
>> 
>> 
>> http://www.retrofixes.com/2013/10/how-to-clean-whiten-yellowed-plastics.html
>> 
>> But what about dirty grey CoCo1 cases, is it possible to restore them
>> to new-ish condition?
>> 
>> Cheers
>> Bill
>> 
>> 
> 
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