Whitening yellowed toys with Hydrogen Peroxide

[bruticus]

35% for 2 weeks??
damn dude... that is complete overkill! especially for coloured plastics.
usually you take it out periodically, let it fully dry, have a look at it and then put it back if it needs more time.

are your white parts super bright now?

just out of curiosity but was the surface of the jar clean (i.e no sticky label residue to cast a shadow?) or was the surface of the plastic part clean?

with the damaged grey part, the pictures dont look that bad to me, however without a proper comparison with some 'before' pics and a non yellowed FM pics, then i cant really tell for sure.

does soaking the part in water permanently return the colour (i.e. still is a vibrant grey colour after it has been fully dried again over a few days) or is it only a temporary thing??

But, if you are really bothered by it then one suggestion (which i have not tried yet) would be continue to bleach it until it is as light as possible then try to dye that part or paint over it. But just make sure to test with scrap pieces first until you get method right. As some people have found that they melted the plastic from being overzealous.

[1AZRAEL1]

Man that sux, hope it can be restored somehow. If I still had my sun damaged FM, I would give it a go as well. (There should be one for sale at the Parra fair)

Kup, would you be willing to take a couple of my damaged junkers to test them out? I want to do it, but just don't have the time to do it myself. Junker Slugslinger and Triggerhappy I have off the top of my head. I wonder how the painted faces will react to the acid.

[kup]

I am afraid that you can't do much with Decepticon targetmasters as you can't pull them apart as they are held together by pins. Also the plastic which they are made of has proven not to react well to the H2O2 as far as the targetmasters themselves are concerned.

Edit: Sorry I accidentally clicked edit on your post when I tried to reply to it hence the 'edited by kup' line report at the bottom.

[bruticus]

Junker Slugslinger and Triggerhappy I have off the top of my head.

how badly junker are they? if its just white parts yellowing then you can fix it. but if its the coloured parts that are yellowed then kup is right and there is little chance to repair it with H2O2 without causing fading.

I am afraid that you can't do much with Decepticon targetmasters as you can't pull them apart as they are held together by pins.

what sort of pins are these? im curious to know what makes them so difficult to disassemble. Cos unless it is glued or fused together, then you should be able to take it apart right? i mean if people at the factory can put it together then in theory you can take it apart...

[1AZRAEL1]

Quite a few parts on them are damaged. I'd have to have another look at them to go into detail. I'll bring them to the Parra fair anyway just so we can have a look at them. I just want to use them as test subjects to see some of the effects. I bought them at a local trash and treasure market a long while back.

Edit:

Edit: Sorry I accidentally clicked edit on your post when I tried to reply to it hence the 'edited by kup' line report at the bottom.

Heh, I had noticed that and thought, what did I do wrong?

All good.

[kup]

what sort of pins are these? im curious to know what makes them so difficult to disassemble. Cos unless it is glued or fused together, then you should be able to take it apart right? i mean if people at the factory can put it together then in theory you can take it apart...

I got home and checked it and I was mistaken. Got confused with an issue which is unique to my Slugslinger and mistakenly generalized it (old man memory ). My Slugslinger has rusted screws with the heads worn off acting as immovable pins.

However my warning still stands, the plastic is of that glossy type which has shown bad reactions to H2O2 on other toys and the targetmasters have shown to have faded colors as a result. I am happy to try to clear up your junkers but there is a considerable risk of damage involved so you know.

[1AZRAEL1]

They are pretty crappy junkers. Using the acid is by trial and error really, so I would rather test it on some bad ones rather than ones that are only slight. I have a good Slugslinger which I got at the last fair, the damaged one is just a spare junker. But if someone wants him for parts is fine

I'll bring him along anyway.

[Eruntalon]

are your white parts super bright now?...

...just out of curiosity but was the surface of the jar clean (i.e no sticky label residue to cast a shadow?) or was the surface of the plastic part clean?...

...does soaking the part in water permanently return the colour (i.e. still is a vibrant grey colour after it has been fully dried again over a few days) or is it only a temporary thing?...

Yes they are pretty good but not great as I haven't had good sun for aaaaages. Also I've noticed that ultra yellow parts on white plastic is a slightly darker shade than the rest of the white and I cannot get it to bleach back 100%.

The jar was clean as can be.

Soaking in water is only a temporary solution as once the parts dry again it goes back to its overly bleached state again.

Man that sux, hope it can be restored somehow. If I still had my sun damaged FM, I would give it a go as well. (There should be one for sale at the Parra fair)

If anyone knows about any local junker Fortress Maximus's or if anyone spots one and is willing to purchase one for the sake of splitting it up then I will gladly purchase these gray parts off of you that I need.

[kup]

I have 1Azrael1's yellowed '87 Targetmaster toys which I will attempt to clear up with H2O2.

Slugslinger will be the first and as you can see, he is very yellowed. I will try the twin cockpit first and the rest of the body can serve as a control so that we can check the level of improvement.



This test will likely take a few weeks or more as I use a very low concentration of H2O2 but I will post every couple of weeks to check on improvement.

[1AZRAEL1]

Heh that is really bad ay.

Well, I look forward to see what happens to it, may take quite some time to change anything.