Has anyone seen this!!! (whitening yellowed plastics)

[Golden Phoenix]

Dogfight is finally out of the CR Tank and back to an almost minty blue!

All that is needed for a full minty look are new reprolabels as his stickers are looking dodgy to begin with but the Hydrogen Paroxide did not affect them at all despite being submerged for days.

Before:

After:



Before:

After:

Wow.
It's a miracle fix.
Let just hope it doesn't end up like soylent green

[jgon2098]

Absolutely magnificent.

Questions:

- The screws on dogfight? Were they 'de-rerusted' by the chemical? or were they new screws from a junker.

- Is the reaction more efficient in an air-tight environment. i.e. closed-lid jar or open-lid jar.

- Recyclibility of the chemical?

[kup]

Absolutely magnificent.

Questions:

- The screws on dogfight? Were they 'de-rerusted' by the chemical? or were they new screws from a junker.

- Is the reaction more efficient in an air-tight environment. i.e. closed-lid jar or open-lid jar.

- Recyclibility of the chemical?

Answers:

- The screws do indeed clean a bit but its hardly perfect, they still look worn and discolored so I had to sand the rust off and paint them silver. I have not seen any negative reaction in practice but theoretically, the Hydrogen Peroxide is very corrosive to metal.

- I have not tested this however the biggest factor to how quickly something de-yellows appears to be direct sunlight. The longer its in the Jar with Sunlight the quicker it de-yellows but I am not sure if maintaining an open jar will make any difference. Keep in mind that the liquid does heat up a bit due to the sun and evaporates and condenses within the jar. Having a closed lid would be best to maintain the volume of liquid for future reuse and avoid possible toxic vapor.

- I have used the same liquid for all of Dogfight's parts. At first I started out with putting them all at once but that had limited impact because some parts shaded others from the sun as well as the Peroxide sold locally being a much lesser concentration than what the Americans can get (Thanks to The_Damned for the tip ). Due to this, I did a couple of parts at a time for a day or two each (depending on avaliable sunlight). I have been using the same liquid this whole time and its equally effective despite several reuses. I have now moved on to fixing yellowed Galvatron parts using the same liquid with great success despite several reuses over more than a week.

[kup]

Note on the 'before' pics since the Camera flash masks a lot of the discoloration:

- The light blue on the body and tailfin was actually a light creamy green
- The dark blue was a very dark green (almost army), particualrly the legs and front back of jet.

The after pics are pretty accurate however.

[liegeprime]

Here's an update on Megs and Shockwave. When they first arrived - Megs is really dissapointingly yellow and Shock is like grey.

Before


After

Megs came out pretty good, although his left arm and head still needs a bit of soaking , meh i can live with it for now.

Shockwave isnt as purple as he used to be yet, but I didnt wanna overdo it so I just took him out after a day in soaking.
note: photo's taken without flash

here's what megs looked like when in the bottle

Id prolly be looking for a bigger bottle since my bottle wont fit Hungurr, preferably with a glass lid as well so that there be no shadows castneeding more time in the soaking solution.

[kup]

That's fantastic results Liege!

I particularly like how your Action Master 'Shakwave' turned back to 'Shockwave!'

I pulled my toys apart before placing them in, that way I don't have to soak parts that I don't have to and can concentrate on a piece at a time. It seems that the more pieces the slower the process and the side that faces the sun, is also the more succesful. Because I am now doing a piece or two at a time, the Jar is more than enough even for large toys such as Galvatron.

[GoktimusPrime]

Would need to fill a bath tub to soak Fortress Maximus.