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Author Topic: Discovered New Way of Removing Yellow from Plastic  (Read 3105 times)

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Offline barneyTopic starter

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Discovered New Way of Removing Yellow from Plastic
« on: November 12, 2012, 03:03:21 PM »
I was sick and tired of looking at a nasty looking Amiga with yellow all over it.  I said what the hell and tried somthing new.

Get a bottle of Soft Scrub with Bleach.  Get a Dish Scrub Brush.  Apply it all over the plastic and rub it like hell.  I had to run the brush under the hot water to thin the soft scrub out a bit but it got the thing looking beautiful.....dare I say it almost looked brand new.  Give it a try.
 

Offline Oldsmobile_Mike

Re: Discovered New Way of Removing Yellow from Plastic
« Reply #1 on: November 12, 2012, 03:51:46 PM »
This sounds like a good idea, since I can't for the life of me find decent instructions for what to buy or how to mix to make "retrobrite", I might give this a try.  Thanks!!  :)
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Offline CJK3o3

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Re: Discovered New Way of Removing Yellow from Plastic
« Reply #2 on: November 14, 2012, 12:37:09 PM »
This indeed will work but bleach damages the abs plastic. Post some pics :)
 

Offline tone007

Re: Discovered New Way of Removing Yellow from Plastic
« Reply #3 on: November 14, 2012, 01:03:26 PM »
Quote from: Oldsmobile_Mike;714683
This sounds like a good idea, since I can't for the life of me find decent instructions for what to buy or how to mix to make "retrobrite", I might give this a try.  Thanks!!  :)

I've never had to follow the retrobrite recipe, simply buying 2 bottles of this stuff: http://www.sallybeauty.com/40-Volume-Developer/SLNCAR67,default,pd.html?cm_vc=SEARCH (liquid, not creme) and mixing it all 50/50 with water was all I needed. Submerging any item I wanted to lighten in the mixture (and making sure it stayed submerged, important) and leaving the whole thing in the sun for a few hours would pretty much do it.

Might be tough to do something like a monitor this way, though..
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Offline som99

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Re: Discovered New Way of Removing Yellow from Plastic
« Reply #4 on: November 14, 2012, 02:56:51 PM »
Quote from: tone007;714933
I've never had to follow the retrobrite recipe, simply buying 2 bottles of this stuff: http://www.sallybeauty.com/40-Volume-Developer/SLNCAR67,default,pd.html?cm_vc=SEARCH (liquid, not creme) and mixing it all 50/50 with water was all I needed. Submerging any item I wanted to lighten in the mixture (and making sure it stayed submerged, important) and leaving the whole thing in the sun for a few hours would pretty much do it.

Might be tough to do something like a monitor this way, though..


I have a hard time getting what's needed for retrobright where I live, could anyone order a few bottles of that stuff and ship to me for some money?
 

Offline TjLaZer

Re: Discovered New Way of Removing Yellow from Plastic
« Reply #5 on: November 14, 2012, 03:48:47 PM »
Quote from: tone007;714933
I've never had to follow the retrobrite recipe, simply buying 2 bottles of this stuff: http://www.sallybeauty.com/40-Volume-Developer/SLNCAR67,default,pd.html?cm_vc=SEARCH (liquid, not creme) and mixing it all 50/50 with water was all I needed. Submerging any item I wanted to lighten in the mixture (and making sure it stayed submerged, important) and leaving the whole thing in the sun for a few hours would pretty much do it.

Might be tough to do something like a monitor this way, though..


I've used the Creme type and it worked really well too.  It was thicker too and easy to apply.
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Offline tone007

Re: Discovered New Way of Removing Yellow from Plastic
« Reply #6 on: November 14, 2012, 04:18:36 PM »
Quote from: som99;714938
I have a hard time getting what's needed for retrobright where I live, could anyone order a few bottles of that stuff and ship to me for some money?


That may be illegal, as I believe it's considered a hazardous material.  Hard to believe there isn't a beauty supply store in Sweden that would sell it, though.
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Offline Cass

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Re: Discovered New Way of Removing Yellow from Plastic
« Reply #7 on: November 14, 2012, 04:54:59 PM »
Don`t be hasty to whiten your Amigas trying various receipts...
You may achieve whiter plastic but it may also degrade it and become brittle. Test it first to similar plastics, not Amiga cases (it`s a pity to destroy what is left in limited numbers by experimenting)
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Offline utri007

Re: Discovered New Way of Removing Yellow from Plastic
« Reply #8 on: November 14, 2012, 04:57:32 PM »
If it is same way than Finland he needs to know actual licensed hairdresser, who could bring it to him.

Store stuff is "safe".
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Offline CJK3o3

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Re: Discovered New Way of Removing Yellow from Plastic
« Reply #9 on: November 14, 2012, 05:35:36 PM »
I retrobrighted plenty of things and also damaged some too until I learned. The trick is to NEVER RUSH. Be patient, don't let your retrobright solution dry, if you're using h2o2 never go over 15%. Also if you're using oxy be very careful -TAED is responsible for most of the cases when blooming occurs.
 

Offline hishamk

Re: Discovered New Way of Removing Yellow from Plastic
« Reply #10 on: November 14, 2012, 08:50:36 PM »
Quote from: CJK3o3;714949
I retrobrighted plenty of things and also damaged some too until I learned. The trick is to NEVER RUSH. Be patient, don't let your retrobright solution dry, if you're using h2o2 never go over 15%. Also if you're using oxy be very careful -TAED is responsible for most of the cases when blooming occurs.

True that. Especially with keyboard lettering. Be very careful. I know a lot say it's safe, but there are some keyboards that hydrogen peroxide would ruin their lettering.

I've used normal hair coloring creme peroxide, 9%-15%. Best results with the 15% and plenty of UV/sunshine. Two to three applications (each lasting about 1.5 hours in the sun), followed by a good soapy wash.

TIP: Once applied, wrap it up in cling film to prevent it from drying out.

The Amiga 1000, even the keyboard, is really resistant to damage - I've retorbrited mine and it looks amazing (not that it was that yellow to begin with, but had some patches).

The Amiga 3000's front bezel as well holds up pretty well, the logo etc will not get wiped off. The keyboard, though, be careful with the key lettering.

Oh, also, for goodness sake make sure you wear gloves at ALL TIMES! You may not feel it during the application, but come a few hours later you could be seeing strange little white dead skin patches and irritation on your hands which will probably need cortisone to cure.
« Last Edit: November 14, 2012, 10:29:39 PM by hishamk »
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Offline Tripitaka

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Re: Discovered New Way of Removing Yellow from Plastic
« Reply #11 on: November 14, 2012, 10:38:51 PM »
http://www.betterware.co.uk/pvcu-restorer-and-reviver.html

This stuff I've used to good effect on cases and also on filthy CD's. Surprisingly good stuff.
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Offline som99

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Re: Discovered New Way of Removing Yellow from Plastic
« Reply #12 on: November 14, 2012, 11:52:48 PM »
Quote from: utri007;714946
If it is same way than Finland he needs to know actual licensed hairdresser, who could bring it to him.

Store stuff is "safe".

Thanks, it's true I do not know a single one who can get me what I need :(
It's not easy to live in Sweden all the time :(
 

Offline kedawa

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Re: Discovered New Way of Removing Yellow from Plastic
« Reply #13 on: November 15, 2012, 02:28:59 AM »
Quote from: hishamk;714978
Oh, also, for goodness sake make sure you wear gloves at ALL TIMES! You may not feel it during the application, but come a few hours later you could be seeing strange little white dead skin patches and irritation on your hands which will probably need cortisone to cure.


That's a good idea, but the little peroxide burns are nothing to wory about.  It's just dead skin cells anyway.  I used to get this from 20% hydrogen peroxide solution splashing on me, and other than occasionally getting a bit itchy, it was not a problem.
Hydrogen peroxide is pretty harmless as far as reactive chemicals go.
I rinse my mouth with 3% straight from the bottle every time I floss my teeth.