English Amiga Board


Go Back   English Amiga Board > Support > support.Hardware

 
 
Thread Tools
Old 15 September 2008, 21:16   #1
tonyyeb
Has the Amiga bug again
tonyyeb's Avatar
 
Join Date: Oct 2007
Location: Hull, UK
Age: 39
Posts: 791
Send a message via MSN to tonyyeb
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.
tonyyeb is offline  
Old 15 September 2008, 21:32   #2
Merlin
AmiBay MegaMod
Merlin's Avatar
 
Join Date: Mar 2007
Location: Manchester, UK
Age: 57
Posts: 1,163
OK, here's the roll-call of people who made all of this possible:-

Luzypher and AMike of a1k.org, for the original idea;
Kristian95, for bringing the idea to EAB;
Rkauer, for helping me make sense of the plastics engineering side of things;
Lorne of Vintage Computer Forums, for his experiments;
Tonyyeb and TheCorfiot of EAB, for their experiments;
Merlin, for bringing TAED to the party and making sense of the science of how it works;

and.....

All of the contributers to the original EAB post, you all helped to make this idea take off. Now everyone can benefit from your collective work.

K+ and Props to all.

AWESOME!!!! (c) Zetr0
Merlin is offline  
Old 15 September 2008, 21:34   #3
tonyyeb
Has the Amiga bug again
tonyyeb's Avatar
 
Join Date: Oct 2007
Location: Hull, UK
Age: 39
Posts: 791
Send a message via MSN to tonyyeb
Thanks for adding the credits Merlin. I had no idea who started it all but anyone who has done this process or will be doing this process has these people to thank.
tonyyeb is offline  
Old 16 September 2008, 05:24   #4
rkauer
I hate potatos and shirts
rkauer's Avatar
 
Join Date: Oct 2007
Location: Sao Leopoldo / Brazil
Age: 53
Posts: 3,482
Send a message via MSN to rkauer Send a message via Yahoo to rkauer
@Merlin: no need for that, m8.

We amigans deserves all the good we can give to each other. Without the support of this board/very good chaps, I never will go that far.

to all you people!
rkauer is offline  
Old 16 September 2008, 09:26   #5
illy5603
Registered User

illy5603's Avatar
 
Join Date: Jul 2008
Location: SPaT CiTY
Posts: 556
Send a message via MSN to illy5603
Here is a dumb question. I live in Northern California, it is still super hot and sunny out. Do I need a UV bulb or can I just use the sun? I imagine living in Hull you are gonna need a bulb! :-)
illy5603 is offline  
Old 16 September 2008, 09:57   #6
tonyyeb
Has the Amiga bug again
tonyyeb's Avatar
 
Join Date: Oct 2007
Location: Hull, UK
Age: 39
Posts: 791
Send a message via MSN to tonyyeb
Quote:
Originally Posted by illy5603 View Post
Here is a dumb question. I live in Northern California, it is still super hot and sunny out. Do I need a UV bulb or can I just use the sun? I imagine living in Hull you are gonna need a bulb! :-)
Lol! We need all the artificial support we can get! Sunlight will do the job.
tonyyeb is offline  
Old 16 September 2008, 11:20   #7
Merlin
AmiBay MegaMod
Merlin's Avatar
 
Join Date: Mar 2007
Location: Manchester, UK
Age: 57
Posts: 1,163
Quote:
Originally Posted by illy5603 View Post
Here is a dumb question. I live in Northern California, it is still super hot and sunny out. Do I need a UV bulb or can I just use the sun? I imagine living in Hull you are gonna need a bulb! :-)
Sunlight should be fine mate, and you should be able to get fantastic results in six to eight hours, based on work Lorne has done in Arizona. Look at the Osborne 1 case pictures in the other thread on this subject

We had a big yellow thing in the sky over Manchester a few weeks ago, we were wondering what is was and we thought it was a UFO; us Mancunians are amphibious you know and we don't like it too hot or dry....mind you, the rain was warmer back then!



LOL
Merlin is offline  
Old 17 September 2008, 22:28   #8
Merlin
AmiBay MegaMod
Merlin's Avatar
 
Join Date: Mar 2007
Location: Manchester, UK
Age: 57
Posts: 1,163
More good info:-

Lorne reports that a batch of peroxide could be good for up to four days' use in sunlight conditions, this is based on the 35% grade. It's to be expected as the TAED catalyses the peroxide as well as the UV light; at least now, we have a flag in the ground as to how long you can use a solution before it's spent.

Merlin is offline  
Old 17 September 2008, 22:29   #9
tonyyeb
Has the Amiga bug again
tonyyeb's Avatar
 
Join Date: Oct 2007
Location: Hull, UK
Age: 39
Posts: 791
Send a message via MSN to tonyyeb
Do people think this thread should be made sticky?
tonyyeb is offline  
Old 17 September 2008, 23:06   #10
Merlin
AmiBay MegaMod
Merlin's Avatar
 
Join Date: Mar 2007
Location: Manchester, UK
Age: 57
Posts: 1,163
The lads at VCF have suggested that we eventually make a Wiki article. I think that's a good shout...
Merlin is offline  
Old 17 September 2008, 23:24   #11
Zetr0
Ya' like it Retr0?
Zetr0's Avatar
 
Join Date: Jul 2005
Location: United Kingdom
Age: 44
Posts: 9,768
I think thats a great idea, I can help by digging up some chemistry formulas
Zetr0 is offline  
Old 18 September 2008, 01:29   #12
DDNI
Targ Explorer

DDNI's Avatar
 
Join Date: Mar 2006
Location: Northern Ireland
Age: 45
Posts: 5,188
Send a message via ICQ to DDNI Send a message via MSN to DDNI
You gotta bet we have MI5 checking EAB!!
DDNI is offline  
Old 18 September 2008, 22:23   #13
Merlin
AmiBay MegaMod
Merlin's Avatar
 
Join Date: Mar 2007
Location: Manchester, UK
Age: 57
Posts: 1,163
OK, Lorne has finished his Osborne 1, get a load of these......you cen definitely tell the before pictures from the after......
Attached Thumbnails
Click image for larger version

Name:	One%20Osborne%201a%20done.jpg
Views:	1608
Size:	15.1 KB
ID:	18023   Click image for larger version

Name:	Osborne%201a%20-%20original%20Ebay%20photo.jpg
Views:	1145
Size:	19.2 KB
ID:	18024   Click image for larger version

Name:	Done%20-%20front%20view.jpg
Views:	1189
Size:	31.4 KB
ID:	18025   Click image for larger version

Name:	Done%20-%20left%20side%20view.jpg
Views:	915
Size:	34.5 KB
ID:	18026   Click image for larger version

Name:	Done%20-%20top%20view.jpg
Views:	937
Size:	27.6 KB
ID:	18027  

Merlin is offline  
Old 19 September 2008, 01:34   #14
Zetr0
Ya' like it Retr0?
Zetr0's Avatar
 
Join Date: Jul 2005
Location: United Kingdom
Age: 44
Posts: 9,768
Now thats

F*CKING JOB DONE!!!

when you next chat to Lorne, tell him well done!

btw, how much is a pristine white Osborne 1 worth these days?

that reminds me Merlicious,

remember we were discussing Halogens the other day on the phone, do you think its wise to caution people on the use of Chlorine based products?

for those that dont know; Chlorine atoms will eventually replace the Bromine atom at the end of the molecular chain, Chlorine will still base with Oxygen and this is were serious problems start

Chlorine is about half the atomic mass of Bromine, this means that there is more room to move around molecularly speaking, with two Chlorine atoms instead of a single Bromine, when the Chlorine atoms attach to Oxygen atoms it is then this that destabilizes the Molecular Polymer chain and makes it brittle.

By using peroxide all we are doing is removing that Oxygen Atom that got stuck over time.

yes yes... formulas coming.... remember I am no Chem-ist

Last edited by Zetr0; 19 September 2008 at 02:10.
Zetr0 is offline  
Old 19 September 2008, 02:01   #15
T_hairy_bootson
Workbitch 1.3

T_hairy_bootson's Avatar
 
Join Date: Oct 2001
Location: Melbourne, Australia
Age: 42
Posts: 2,033
Can all variations and new information be added to the first post and then the thread stickied? Will be great when I finally get around to doing this not having to trawl through a massive thread of info. Or the wiki idea.
T_hairy_bootson is offline  
Old 19 September 2008, 09:10   #16
Merlin
AmiBay MegaMod
Merlin's Avatar
 
Join Date: Mar 2007
Location: Manchester, UK
Age: 57
Posts: 1,163
@ Zetr0

Good call; 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.

@ THB

Don't worry, all of the information on here and over at VCF is being collated, along with some related Wiki articles. The whole thing will be put together into a dedicated Wiki in early October. I agree, there's a lot of information to sift through, there's been a lot of science abuse on the forums recently, long may it continue!!
Merlin is offline  
Old 19 September 2008, 09:37   #17
tonyyeb
Has the Amiga bug again
tonyyeb's Avatar
 
Join Date: Oct 2007
Location: Hull, UK
Age: 39
Posts: 791
Send a message via MSN to tonyyeb
I've added the warning about mixing peroxide based products with bleach.
tonyyeb is offline  
Old 19 September 2008, 19:58   #18
rkauer
I hate potatos and shirts
rkauer's Avatar
 
Join Date: Oct 2007
Location: Sao Leopoldo / Brazil
Age: 53
Posts: 3,482
Send a message via MSN to rkauer Send a message via Yahoo to rkauer
Just remember that chlorine bleach is useful to clean the cover of wires (PVC).

If you have a bad shape keyboard wire, it is the bleach you must use on it. Also good for rubber balls (that one inside mice).
rkauer is offline  
Old 22 September 2008, 17:27   #19
Merlin
AmiBay MegaMod
Merlin's Avatar
 
Join Date: Mar 2007
Location: Manchester, UK
Age: 57
Posts: 1,163
Hey guys, here's an update...

Lorne over at VCF is going to try the 'gel' version of our magic formula. I have advised him to try gelling the mixture with xanthan gum, which is easily obtainable and should make a clear gel. We are aiming for a mixture that is brushable like emulsion paint. Lorne has ordered the xanthan gum, we are just waiting for it to arrive. He is going to add the gum after he has added the 'Oxy' to activate the peroxide solution.

Stay tuned....we aren't sure how this is going to turn out, but it's all good science abuse anyway....

Last edited by Merlin; 22 September 2008 at 17:54.
Merlin is offline  
Old 22 September 2008, 17:39   #20
tonyyeb
Has the Amiga bug again
tonyyeb's Avatar
 
Join Date: Oct 2007
Location: Hull, UK
Age: 39
Posts: 791
Send a message via MSN to tonyyeb
That sounds cracking! It would be great to brush on, leave 8 hours then wash off. Better than weighting stuff down.
tonyyeb is offline  
 


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Similar Threads
Thread Thread Starter Forum Replies Last Post
Removing yellowing from Amigas with peroxide Kristian95 support.Hardware 1139 17 June 2019 13:08
Removing Yellowing using H2O2, TAED & UV alexh support.Hardware 31 21 February 2010 23:48
WTB / WTT: CD32 Plastics Zetr0 MarketPlace 17 14 August 2007 17:30
WTB / WTT: Sega Megadive Plastics Zetr0 MarketPlace 21 23 July 2007 19:44
WTB or TRADE FOR: A1200 Plastics Zetr0 MarketPlace 39 19 July 2007 00:01

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +2. The time now is 13:37.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.
Page generated in 0.09260 seconds with 15 queries