mons2b wrote:You have a Tesla coil? Too cool.
After extensive reading of these bleach experiments I do not believe they are a good idea. When its bromide that has caused or accelerated the yellowing then bleaching just takes off the surface layer. Theres plenty more still in the plastic will will leach out again. It seems once you whiten the plastic you make the transfer of bromide happen even faster plus add a oxygen sensitivity to the mix. It seems the treatment gives the computer a oxygen allergy! I suggest if you totally cant stand a little yellowing then cover the treated plastic in a UV clear matte coating to block oxygen getting to the surface and to try to aid a little in reducing brittleness. Myself I will leave my yellowed computers and printers etc as they are. I really dont want to make that plastic brittle. I had one atari st case that had become so brittle with age that whatever I did new bits kept breaking off. Sad, the motherboard is ok so I will use it as games machine for my daughter to play with. Love that younger kids will give an older game a go and enjoy it.
mons2b wrote:..I really dont want to make that plastic brittle.
tezza wrote:mons2b wrote:..I really dont want to make that plastic brittle.
I've found if cases are yellowed then damage has already taken place and the plastic is brittle anyway. In my experience the de-yellowing doesn't seem to increase brittleness. These are just my own observations though. I'd be interested in any valid research that shows de-yellowing treatments further damage plastics.
SpidersWeb wrote:I was talking with an Amiga collector who is outside of the normal groups, and he mentioned that he sprayed on a clear UV protectant and the yellow didn't return. This peaked my interest too, so I'll have to find out exactly what product he tried and see if I can replicate.
Just wanted to post up to +1 the UV protectant idea.
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