Any Aussie Amigans managed to make up some RetroBrite?

[mingle]

Hi guys,

I'm wanting to clean up a few of my Amigas (particularly a lightly yellowed A3000), but can't seem to find the necessary ingredient (ie: the 12% Peroxide solution) in Melbourne...

I can find 40vol creme developer and some other 40vol peroxide-based hair-lightening products, but I think they have too many added extras to work properly...

Can any other Australian-based Amiga freaks help me out with any suggestions? :-)

Cheers,

Mike.

[mingle]

Oh, just noticed stefcep2's [post on this very topic!

Off to Priceline I go! :-)

Cheers,

Mike.

[mingle]

Hi guys,

Thanks for the excellent replies!

Just to confirm what 'Oxy' powder I need - is it actually the washing powder, or the Oxy (Napisan-type) laundry soaker/stain remover powder?

Cheers,

Mike.

[mingle]

Hi all,

I managed to get the ingredients: "Innovative" 40vol Creme Developer 1000ml for $AU9.99 and 1kg (I know I'll never use it all!) Woolworths Home Brand "Nappy Treatment Plus" - which has exactly the same active concentration as the other brands and only cost AU$2.49 (hope it bloody well works!).

I've mixed up a very small batch (about 80ml) to try out on a A3000 'humpback' mouse which has mild yellowing on one side.

It's pretty sunny today, so I'll leave it out for the rest of the day (only about 4 hours of sunlight left) and try it some more tomorrow.

I have a couple of final (?) questions about the process:

1: Should there be a visible reaction (bubbling, etc) when I add the Oxy solution to the Creme Developer?

2: How long does the mixed solution (with the Oxy added) last after being mixed?

Cheers,

Mike.

[mingle]

Ah... Maybe I didn't add enough Oxy - I mixed about 1/4 level teaspoon with 40ml of warm water, then mixed 20ml of that with around 80ml of the creme developer. I could only see a few tiny bubbles in the mix and no obvious reaction actually happening...

I'll give it a go and see if it makes any difference.

I know it works well on my fingers - the skin is coming off! Must wear gloves next time! :-)

Cheers,

Mike.

[mingle]

Okay, I gave it a go for around 3 hours and had varying results - I still think I need a few pointers...

I noticed that the solution did 'foam' a bit more after an hour or so of being mixed - maybe I didn't dissolve the Oxy correctly?

I also tried it on an old floppy front-panel, which worked well and an Amiga 4000 spacebar, with light yellowing. Both were 80% back to original color after 2.5 hours...

The Amiga 3000 mouse, however looks a bit of a mess...



The flash and some contrast enhancement make it look a lot worse than it actually is!

The main issue seems to be the whitish patches on the mouse-buttons. The body of the mouse is also slightly 'streaky'. I did apply the mixture (which was quite thick and 'creamy') pretty liberally and put plenty on. I didn't make any real effort to make it a thin or even coat.

Questions now:

1: Can I fix the whitish spots with another proper full-time application tomorrow?
2: How thick/thinly should I apply the mixture?

Cheers,

Mike.

[mingle]

Hi,

After reading a few posts about people skipping the addition of Oxy altogether, I had another go today...

I've tried using just the Creme Developer and I didn't see any of the 'blooming' I had when using the Oxy added. I did my first 'test-run' yesterday (and an A3000 mouse) and I ended up with some white spots on the buttons and an overall 'blotchy' or uneven removal of the yellowing...

Today I tried it (no Oxy this time) on an old VIC-1515 printer. I was using a 40vol (12%) Creme Developer and brushed it on with a small (about 1/2 inch across) artists brush, reapplying/rebrushing every 45-60 mins.

However I seem to have the same issue as yesterday, with uneven removal of the yellowing. The brush-marks of the initial application were still quite noticeable, even after 6 hours outside in the sun.

Do you have any other suggestions on what I could try for a more even finish?

Possibly diluting the Creme Developer with distilled water?

I've heard some people use a much weaker (3%) solution (plus Oxy) with good results.

I'd like to get it down pat before I risk the front-panel of my A3000! :-)

Cheers,

Mike.

[mingle]

Hmm...

I might try again with some of the proper Oxy stuff and also experiment with some 3% solution...

I'm using the recommended 40vol (12%) - is this too strong (30vol or LESS has been mentioned)?

This is not as magical a solution as I expected! :-/

Mike.