Quote:
Originally Posted by vic0239
I've had great success by using a solution of "OxiClean" dissolved in a basin of hot water. Place the discoloured pieces in the water and leave outside in full sun for an hour or so. Turn occasionally to make sure every side is exposed at some point. Stubborn discolouration will take longer. Once rinsed and dried the parts will polish to a wonderful shine.
NB This method works well on lighter coloured plastic, but extra care is needed with dark colours which are prone to blooming which will require some elbow grease to remove!
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I'm no chemist but I think OxiClean is effecively a bleach since hydrogen peroxide is produced when it's dissolved in water. This would explain the blooming which would be more obvious with darker colours. The polishing required after treatment would remove the bleached surface. My initial thought would be that you might as well miss out the bleaching phase and just polish/abrade from the start. Borax is a cheaper alternative to OxiClean by the way.
Alan