RetrObrite

[TjLaZer]

I want to try this soon.  Problem I cannot find any Peroxide here in the states, where can I find some 10% or such?  Also where to find Xantham gum!??!  I got some Oxi Clean Versatile stain remover powder, hope that will work....

[TjLaZer]

Thanks all.  I ended up getting the Peroxide at Sallys and Xanthum gum on Amazon.  The strongest they had in the brown bottle.  Clairoxide 40.  Doing some yellowed keys and keyboards now, seems to be working good!  I need to do it for another day.  1 day already but it's not enough...

[TjLaZer]

This was NOT done using the RetroBrite formula (the whole gel idea seems like too much trouble to me,) but H2O2 is good stuff.

Before:


After:


What a difference 8 hours makes.

Looks good.  Though it looks as it might need a tad more?

Did you dismantle the 1200 and do the case/keys seperate?  Or on the unit as one piece?

[TjLaZer]

Correct, a mixture (50/50 or so) of water and 40 weight liquid peroxide from the beauty supply shop, and 8-10 hours or so out on a sunny day.

Where you at?

I've been at it since last week and still not done!  But I am in Seattle so that is why I'm so slow... LOL

Did some Atari ST keys and they turned out great!  Doing a set of A2000 keys, a 4000 drive face plate and a A1000 keyboard and space bar now, almost done.  I had a very yellow C=128 PS that is stubborn!  I see some improvement buy still a little yellow.  I'll keep at it.  

I have to constantly run more solution over the parts as they dry up.  Are you guys doing this?

[TjLaZer]

Yes you can get it ready to go, it's called Clairon Professional 40 Creme Developer.  It's a milky white creme that works great, been doing it to a bunch of C= and Atari stuff and works great!

[TjLaZer]

the cream is no good if you plan for direct sunlight exposure.


the clear kind is good though submerge it in a fish tank and stick it in the driveway.

I've had no problems at all!  The reason?  The milky creme developer is thick enough that it does not block the sun.  And it is better than the clear kind that is just too watery and tends to dry up too quick.  Seems the creme is better as it stays on the parts longer.  I imagine if you constantly brushed the regular peroxide on every 5 min that it would work great.  But I rather not do that!

This is the most dramatic item I have done so far.  I did not even dismantle the unit!  I did the keyboard by gently brushing the creme developer on every 30 min or so.  It was thick enough that it did not drip in the keyboard.  I think I left it in the sun around 6 hours.  I then cleaned all the parts with some SimpleGreen and a damp cloth.  On others I did just remove the keyboard and mylar and did it that way, and it was better to clean it up (was really dirty anyhow)