[vcf-midatlantic] Retrobrite instructions from the master

Jonathan Gevaryahu jgevaryahu at gmail.com
Sun Jul 30 00:19:04 EDT 2017

Keep in mind how retr0bright actually works: 
tl/dr (at least how I understand it) the yellowing is caused by 
microfractures in the ABS plastic smaller than the wavelength of light 
(sort of how a morpho butterfly's wings are blue) and the peroxide 
oxidizes/eats/disintegrates away the top layer of ABS plastic to expose 
fresh material below which doesn't have the micro-cracks in it.

If this is correct, the yellowing has nothing at all to do with 
brominated fire retardant, but does have to do with chemicals added to 
the ABS plastic for UV stability or lack/insufficiency thereof.

On 7/27/2017 7:18 PM, corey cohen via vcf-midatlantic wrote:
> Maybe.  I'll check.  I know I have after images.  :-)
> corey cohen
> uǝɥoɔ ʎǝɹoɔ
>> On Jul 27, 2017, at 12:25 PM, Joseph Oprysko <joprysko1 at gmail.com> wrote:
>> Do you have some before/after pictures?
>>> On Thu, Jul 27, 2017 at 11:08 AM corey cohen via vcf-midatlantic <vcf-midatlantic at lists.vintagecomputerfederation.org> wrote:
>>> On my Mac-128 I had great success using a giant tub and about 20% peroxide diluted to about 2%.  Add some oxy clean and agitate.  Left it overnight and no streaks and came out great.
>>> Only downside is the cost of peroxide to fill up a tub that can fit the Mac 128k case parts, mouse case and keyboard case.
>>> I did remove all the decals and logos beforehand that were not peroxide safe.
>>> For the keys,  had them sit in 70% ISP for an hour to loosen up the dirt and then clean with an old toothbrush.   Finally removed any yellow by immersion in 3% peroxide for an hour.
>>> The space bar needed perioxide 40 cream developer till it matched the rest of the keys, Mac space bars are known to go yellow.
>>> Cheers,
>>> Corey
>>> corey cohen
>>> uǝɥoɔ ʎǝɹoɔ
>>> On Jul 26, 2017, at 11:35 PM, Evan Koblentz via vcf-midatlantic <vcf-midatlantic at lists.vintagecomputerfederation.org> wrote:
>>>>> I've had lots of success using the Salon Care 40 cream, with nothing else added.
>>>> I believe you, but his instructions are specifically NOT to use the cream, but rather the clear version, and not to use plastic wrap because it can cause streaking (he said that in person, not in the video).
>> -- 
>> Normal Person: Hey, it seems that you know a lot.
>> Geek: To be honest, it's due to all the surfing I do.
>> Normal Person: So you go surfing?
>> Normal Person: But I don't think that has anything to do with knowing a lot...
>> Geek: I think that's wrong on a fundamental level.
>> Normal Person: Huh? Huh? What?

Jonathan Gevaryahu
jgevaryahu at gmail.com
jgevaryahu at hotmail.com

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