cheers cliffjumper many thanks
hot shot this is a funny question to answer .
i was warned that the effects on metals may corrode it but on an metels ive tested so far its had ether no effect or a postive effect (i put a realy bad brainstorm head in the stuff, which has a pin though the legs, very heavey rusted, also yellow down 1 side)
heres the results (i did take a before photo of this and other parts but when itransferd em to the comp, it crashed and i lost em

)
but if you look close to the rusted top, you can see it was so heavey it even stained the plastic around

as you can see the metal is starting to show though and the rust is going

this is him finished (the arm was broken along time ago, so i though id use it to test the colours)
also ratchets front plate and feet plates are both metal
heres a close up of the metal from both bits after treatment

(the paint was chipped before been treated so the metal was exposde to the soloution, also that head stick was also still on the plastic and treated too)
these are wing pins from a silverbolt (i took them out when i read your post).
anyways i have now got one of the pins in the soloution testing for you, its been in there about 3hours so far, but ill keep it in over night to see how it reacts.
i think if the metal is good quality (eg the pins and plates) it seems to be fine, but some times the screws are a cheaper metal quality and my well corroude.
also i wil ladd this update from the other site (contains some tfs).
also it has a full view of the ratchet robot.
oh should add the chome plastic bits were also treated with no ill effects.
this is the next batch done, also apart from a gundam action figure i think its all i have (yellowed) which i can do.

close up on blue rubber fake robot
before

after

no signs of any change to the plastic, bar the yellowing going
this is the skullgrin sword and the gundam small figure before

gundam now

sword (heavey yellowed 1)

i did a close up to show the liver spots now, that havent totaly gone but much better than before, after a few more treatments these may go
block man figure close up
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http://i26.tinypic.com/r0762v.jpg[/IMG