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Bleaching dyed black parts? Can it be done?
Posted: Fri Apr 11, 2014 8:17 am
by Twin Detonator
Can parts dyed black be bleached back to white?
I've got a set of nice black dyed white long arms, can they be brought back to a white? Or am I SOL?
Lynn
Re: Bleaching dyed black parts? Can it be done?
Posted: Fri Apr 11, 2014 9:11 am
by Charlie don't surf
You can Krylon them if you want them white again
Otherwise...fuggetaboutit.
Re: Bleaching dyed black parts? Can it be done?
Posted: Fri Apr 11, 2014 9:56 am
by THE H.P FREAK
HI!... Nope!
Re: Bleaching dyed black parts? Can it be done?
Posted: Fri Apr 11, 2014 10:00 am
by GoMachV
You know what they say..."once you go black...."
Re: Bleaching dyed black parts? Can it be done?
Posted: Fri Apr 11, 2014 10:24 am
by Coelacanth
Actually, RIT Dye makes a color remover, but I have my doubts on how effective it would be. Might be worth a try, anyway.
https://www.ritstudio.com/techniques/the-basics/rit-color-remover/
Re: Bleaching dyed black parts? Can it be done?
Posted: Fri Apr 11, 2014 10:27 am
by GoMachV
It's been tried several times, in fact several methods have been tried several times. Not trying to stop anyone from experimenting but a search on here will show what has been tried so you can rule those out
Re: Bleaching dyed black parts? Can it be done?
Posted: Fri Apr 11, 2014 10:33 am
by jwscab
about the only way you can get it to go away is to literally strip off the thin layer that has been dyed. This will require a TON of work, and will result in a physically smaller part. If you were able to find a solvent for nylon, you might be able to get a large portion removed quickly, but it will be effectively melting the part.
Re: Bleaching dyed black parts? Can it be done?
Posted: Fri Apr 11, 2014 2:04 pm
by GodSpeed
jwscab wrote:about the only way you can get it to go away is to literally strip off the thin layer that has been dyed. This will require a TON of work, and will result in a physically smaller part.
I've never done it but from what I've read, I'm not even sure if that's correct.
I was under the impression that the RIT dye is absorbed completely throughout the plastic so that even if you chip or ding a part, you don't loose the colour.
True or untrue?
Re: Bleaching dyed black parts? Can it be done?
Posted: Fri Apr 11, 2014 2:19 pm
by GoMachV
Depends how long it's in the dye. If you let em sit for a while with some good hot water (I use a deep fryer!) it will penetrate more and more. I've cut into parts that have a slight ring of color and some that are penetrated halfway thru.
Re: Bleaching dyed black parts? Can it be done?
Posted: Fri Apr 11, 2014 5:07 pm
by Charlie don't surf
It doesn't absorb all the way through, but it does work in about 1-2mm. I have a trick for lighter colors but it only goes to do-do brown when trying on black. Leaving it black is better than that
there are ways to remove colors.(no, not sharing) but not that color-
Re: Bleaching dyed black parts? Can it be done?
Posted: Sat Apr 12, 2014 9:33 am
by Twin Detonator
Bummer... Kind of what I thought.
For a shelfer I kind of like the Krylon white plastic paint idea. I got some spare junk parts I can try it on.
THX,
Lynn