An old 5 gallon fish tank?

They sell 40% peroxide at the beauty supply house that is paste.

I wonder if you mixed the oxy with it and just put the paste on the face of the plastic - keeping it away from the backside?

I wonder if the type of plastic makes a difference.

You know how those old Bally plastics stink like cheese?

The Frisket used to mask while painting is solvent resistant (it does not lift, wrinkle or allow paint to creep under it).

Maybe that could protect the screen printed side of the plastics while soaking?

Lay it on a space blanket or shiny aluminum foil for maximum tanning!

I tried this, using frisket to mask the paint on the back of the plastics.

The plastics were cleaned with Novus2 to get any surface gunk off, so the peroxide could work and not get blocked by waxes or nicotine.

I found 2 piss yellow plastics of the same year (1978). These are the plastics that smell like puke.

I used 1/4 teaspoon of Oxy-Clean to 1/4 cup BRAND NEW 3% Hydrogen Peroxide. If your peroxide has been opened for a few weeks in the closet, it's not 3% anymore.

I put the mix in a ziplock bag, then put the bag in a shiny aluminum pie pan on my hotel balcony in the morning.

sbm-before.jpg

In the evening, I returned and found the Oxy/peroxide worked!

Unfortunately, the stuff removed the frisket too, so some of the white paint got eaten off in the process.

Here is a pic of the plastic, next to the control plastic that did not go in the mix.

sbm-after.jpg

So we need some better stuff to protect the paint, but clearly it does work well.

billy.jpg

No, the frisket glue did not hold at all.

The frisket film turned white and was just floating around in the mix.

Maybe, painter's tape.

How hot of water?

I wonder if the chemical reaction or the sunlight will make it too warm?

Oxyclean has the necessary Tetra Acetyl Ethylene Diamine we need to start the reaction.

Here are some plastics from 1979, but from Williams this time.

Same 1/4 teaspoon Oxy, 1/4 cup peroxide 3% formula.

clear-before.jpg

clear-after.jpg

It was cloudy this morning, so I put them out at lunchtime and came back to get them after sundown. So it might have been 7 hours.

You can't see the yellow when you hold them in the air, but you can see it when you put them on bright white paper.

I'd say 80% of the yellow is removed.

If it's sunny in the morning, I might put them out for another round with fresh chem.

I'll report if any further de-yellowing occurs.

UV A or B?

I did not smell them yet.

I was going to run them one more time, but it's been raining.

Or if you have a stripper girl friend, she could take them in the tanning bed for you.

I would not doubt she works the poles in the office.

Try real painter's frisket like the stuff from TCP Global.

That stuff does not bleed at all.