De-yellowing

[Joe Giliberti]

I've successfully "retrobrited" old TV safety screens and a few NES
console. What I used was 12% hydrogen peroxide from the beauty supply shop,
along with sodium percarbonate, glycerin to keep it wet and xanthan gum to
stabilize it to a paint on gel. Then all you do is paint it on, cover it
with Saran Wrap and put it out in the sun.
One of the TVs I did, I still have it and the yellow didn't return. I don't
know about the NESs because I flip them

Fun chemistry!

On Mon, Aug 24, 2015 at 1:23 AM, Chuck Guzis <cclist at sydex.com> wrote:

> On 08/23/2015 09:53 PM, Ali wrote:
>
> I can tell you from personal experience that repainting does not work
>> well. One, matching the color is nearly impossible. You can get
>> pretty darn close but not exact. Two, the paint quality is never as
>> good. Three, the feel is different - this one is hard to explain: it
>> just doesn't feel smooth and slick but rough and scratchy. I have
>> tried different brands of paint, gloss, non-gloss, sealant, etc to no
>> avail. I can make it look good especially from a few feet away but in
>> practice you can easily tell it has been painted.
>>
>> Just my two cents.
>>
>
> Hi Ali,
>
> If you're talking about rattle-can painting, I can believe that.
>
> But there's painting using professional spray gear, as well as
> powder-coating.  Rattle-can was never intended as anything but an "any
> idiot can do it" proposition.
>
> If that weren't the case, we'd all be painting our cars using a spray can.
>
> Regardless, if I read the conservation lists correctly, plastic is
> eventually doomed.  No one seems to know how to stabilize it.
>
> I recall an Apple color monitor that sat on a table and, without being
> powered on or otherwise disturbed, would shed a bit of itself every now and
> then...
>
> Just my own .02,
> Chuck
>
>
>