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How to remove yellowing from an old Atari case


905 replies to this topic

#901 Stephen ONLINE  

Stephen

    Quadrunner

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Posted Wed Oct 18, 2017 6:28 PM

Ok, I know this is 8 bit retrobriting, but I also own a bunch of ST stuff.. and thats what I am looking to retrobrite right now.

 

It is Grey, so.. will it bring it back to grey? or white?

 

James

Be careful with them!  The 65/130XE as well as the ST cases are very susceptible to "bloom".



#902 Bikerbob OFFLINE  

Bikerbob

    Dragonstomper

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  • Location:Mississauga ON Canada

Posted Thu Oct 19, 2017 6:04 AM

So is there a better, or preferred method for those cases? I can use mine, but it would be nice since I have it all apart for hardware upgrades to clean up the cases and the keys.

 

James



#903 martinez OFFLINE  

martinez

    Combat Commando

  • 9 posts

Posted Thu Oct 19, 2017 6:35 PM

Not sure it will help, but check out this blog:
https://www.retrohax...nd-upgrade-job/
https://www.retrohax...-restoration-2/
https://www.retrohax...s-hax-part-one/

This guy retrobrites without exposing plastics to sunlight, uses warmth instead. Just covers plastics with 12% peroxide cream, wraps carefully in black foil, then keeps it in dark warm place for one week. This treatment seems to be quite "safe", I mean, looks like prolonged procedure and avoiding UV-light prevent plastics from partial discoloring etc. imperfections.

I think the best way is to retrobrite something cheap and easy to replace first. Such as an old XC12 recorder, or STM-1 mouse. When you fine with the outcome, use the same treatment to your precious ST case.


Edited by martinez, Thu Oct 19, 2017 6:38 PM.


#904 Osgeld ONLINE  

Osgeld

    River Patroller

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  • Location:Nashville, TN

Posted Thu Oct 19, 2017 6:46 PM

just like bbq slow and low, with even treatment of sauce = mmm mmm good

 

besides blotching which is mostly due to uneven paste application, my biggest beef if BLEACH WHITE, like that darn 8 bit idiot, everything he does turns titanium white and blotchy, ya that keyboard was platinum silvery grey, not RGB 255,255,255, and that osbourne was medium grey, not winter alps snow 


Edited by Osgeld, Thu Oct 19, 2017 6:49 PM.


#905 flashjazzcat ONLINE  

flashjazzcat

    Quadrunner

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Posted Fri Oct 20, 2017 3:05 AM

Oh yeah... He totally destroyed the Osborne.

#906 Bikerbob OFFLINE  

Bikerbob

    Dragonstomper

  • 596 posts
  • Location:Mississauga ON Canada

Posted Fri Oct 20, 2017 9:22 AM

Hmmm.. nothing so far is making me want to try this.. LOL.. I like the clear solution in the water and the sunlight.. maybe its a matter of less time?

 

James






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