A group of retro computer enthusiasts have joined together to create the world’s first open source, vintage computer polish. Named “RetrObrite”, the substance is able to significantly brighten old yellowing computer gear. Though the project serves a very tiny niche, it’s a fantastic example of successful open source problem solving.
RetrObrite explains:
Anyone who has dug their old computer or console out of the cupboard or loft for some retro gaming will probably have noticed that it maybe hasn’t worn too well with the test of time. The plastics these machines were made of is called ABS and to make it flame retardant (just in case it catches fire after a marathon session) the plastics manufacturers added chemicals that caused the plastic turn yellow or, even worse, brown over a long period of time.
It was originally thought that the yellowing was permanent and that the only solution to this was to paint the plastic in its original colour and cover the problem up. However, a chance discovery was made in March 2008, by The CBM Museum at Wuppertal in Germany, that immersing parts in a solution of Hydrogen Peroxide could partially reverse the process. This was initially taken up by the Amiga community in Germany (http://www.a1k.org) and the idea eventually found its way to the English Amiga Board (http://eab.abime.net), where a madcap collection of chemists, plastics engineers and retro hackers managed to perfect this concept and put it on steroids, with help from other forums.
[RetrObrite via Boing Boing]


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This 2007 article covers the issue quite well. It also mentions all possible solutions to the problem, preventative measures, and covers the Retrobrite project:
http://www.vintagecomputing.com/index.php/archives/189
March 5th, 2009 at 10:51 pm