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tonyyeb · 15 September 2008, 21:16

Hi all

After reading about the process and seeing some great results I decided to try this process on a mouse case. It didn't come out as I expected (http://eab.abime.net/showthread.php?t=38821). So after reading further (http://eab.abime.net/showthread.php?t=37808 and http://www.vintage-computer.com/vcfo...light=peroxide) I tried again on an A600 set of keys. So this is a guide of how I did it:

You will need:

Eye protection (goggles of some kind from motor factors will do)
Rubber Gloves
Lamp (Asda SmartPrice £2.98)
UV Bulb (Maplin £8.99 http://www.maplin.co.uk/Module.aspx?ModuleNo=33124)
Washing up bowl
Towels
Hydrogen Peroxide (Stronger the better - I used 30% (100vol). Available in various forms and from various places, Chemists, Hair Product sellers etc... WARNING: Anyone wanting to clean plastics should NOT be mixing peroxide (or most other cleaning products for that matter) with bleach; the worst case is that Chlorine gas can be given off; this was used as a poison gas on soldiers in WW1.)
Vanish Oxy Action (Asda - £3.98 a tub)
Blu Tac

The Process:

Take an A600 with yellowed keys (or any bits of yellowed plastic):

I stripped the keys and placed them in the bowl

I would recommend weighing the keys down with a bit of blutac stuck underneath each key.

Place the bowl over the towels.

Then pour in the Hydrogen Peroxide. I used about a litre to just cover the keys. I added about 1/4 of a tea spoon of Vanish Oxy action. It was spread evenly over the contents of the bowl.

Then I switched on the UV Lamp and placed it over the bowl.

I checked on it about every 30 mins but this was maybe a bit over cautious / curious!

This is how the L key started with the underside of another key shown to show what it should look like:

This is the keys after 8 hours. The A key was weighed down and shows a slight improvement over the L. The 1 is obviously an untreated key.

To see more pics of the process view my album: http://eab.abime.net/album.php?albumid=88

Thanks for Merlin for tips and help.

15 September 2008, 21:16	#1
tonyyeb Has the Amiga bug again Join Date: Oct 2007 Location: Hull, UK Age: 43 Posts: 791	Guide to removing yellowing of plastics Hi all After reading about the process and seeing some great results I decided to try this process on a mouse case. It didn't come out as I expected (http://eab.abime.net/showthread.php?t=38821). So after reading further (http://eab.abime.net/showthread.php?t=37808 and http://www.vintage-computer.com/vcfo...light=peroxide) I tried again on an A600 set of keys. So this is a guide of how I did it: You will need: Eye protection (goggles of some kind from motor factors will do) Rubber Gloves Lamp (Asda SmartPrice £2.98) UV Bulb (Maplin £8.99 http://www.maplin.co.uk/Module.aspx?ModuleNo=33124) Washing up bowl Towels Hydrogen Peroxide (Stronger the better - I used 30% (100vol). Available in various forms and from various places, Chemists, Hair Product sellers etc... WARNING: Anyone wanting to clean plastics should NOT be mixing peroxide (or most other cleaning products for that matter) with bleach; the worst case is that Chlorine gas can be given off; this was used as a poison gas on soldiers in WW1.) Vanish Oxy Action (Asda - £3.98 a tub) Blu Tac The Process: Take an A600 with yellowed keys (or any bits of yellowed plastic): I stripped the keys and placed them in the bowl I would recommend weighing the keys down with a bit of blutac stuck underneath each key. Place the bowl over the towels. Then pour in the Hydrogen Peroxide. I used about a litre to just cover the keys. I added about 1/4 of a tea spoon of Vanish Oxy action. It was spread evenly over the contents of the bowl. Then I switched on the UV Lamp and placed it over the bowl. I checked on it about every 30 mins but this was maybe a bit over cautious / curious! This is how the L key started with the underside of another key shown to show what it should look like: This is the keys after 8 hours. The A key was weighed down and shows a slight improvement over the L. The 1 is obviously an untreated key. To see more pics of the process view my album: http://eab.abime.net/album.php?albumid=88 Thanks for Merlin for tips and help. Last edited by tonyyeb; 19 September 2008 at 09:37.