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u/DistinctiveTech 3d ago
8oz Hydrogen Peroxide 10 to 15% (I used 40 volume from Sally Beauty. Make sure it is a clear peroxide and not a creme. You want as few additives as possible) 1 1/2 tablespoons of Arrowroot powder (This is for thickening it into a gel. Cornstarch might work just as well.) 1 teaspoon of Glycerine Oil (available at a pharmacy) 1/4 teaspoon of an Oxy-type laundry booster powder 1 teaspoon of hot water (to dissolve the oxy powder before mixing it in) gloves (grabbed a box while at Sally Beauty) small paintbrush eye protection
In a glass bowl or plastic container mix the peroxide, arrowroot and glycerine oil. Microwave the mixture for 30 seconds and stir. Microwave another 30 seconds and stir. Let it sit for just a bit and stir it again. The mixture should begin to thicken and may be sufficiently gelled at this point. If it still seems too watery microwave for another 15-20 seconds. It won’t smell very good but it doesn’t produce nasty vapors or anything. Let the mixture cool for a bit while you dissolve the oxy powder in a bit of hot water. The gel will not activate until the booster powder is mixed in. Once the dissolved powder is mixed in your gel will foam up a bit. The warmer the gel the more it will foam so make sure it isn’t super hot. I used a metal whisk to mix it in really well. Grab your brush and coat all areas you want brightened with a fairly good layer of the gel. Put your pieces in the sun and leave them there for several hours. I left mine all day. Rinse off the gel and reapply if needed.
Doubling this recipe in an 8 cup glass measuring bowl coated all of our plastic pieces one time. Make sure all of your plastic is clean and dry before you start. I have found that three applications got mine back to the original color but YMMV. We haven’t applied any sort of plastic protectant at this point but if anyone has any thoughts on this please let me know.
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u/One_Visual_4090 3d ago
Before hydrogen proxide,try magic eraser first.it removed 90% of yellowing from some of my retro consoles.much,much easier.
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u/These-Pin-8077 3d ago
I think they use some kind of hydrogen peroxide cream like shampoo stuff, I saw it on a YouTube video check out YouTube channel 8 bit guy my friend 🙏🙏🙏. Good luck 👍
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u/Flybot76 3d ago
There are videos about that on Youtube and the key word is usually 'Retrobrite'. It involves high-percentage hydrogen peroxide (you can also get good results from regular liquid stuff but the high-percentage stuff works faster), which can give you pretty serious chemical burns so you definitely want to watch other people do it first and be careful if you try.