Removing AL oxide but not plastic material
Posted by admin on June 6th, 2009 at 01:56am
Here is a layer of oxide so thick it’s eaten thru the thin aluminum sheet in some places. something’s been reacting on the surface for years. problem is, underneath it is some text from an old printing plate. it’s printed on in that mauve plastic ink compound used for printing images onto aluminum which is then used for printing on paper.
you can almost make out the word COFFEE under all the crud.
so: is there any way to remove the crud without damaging the plastic-like printing compound fused into the aluminum? i’ve tried sodium hydroxide, it wipes out oxide and ink. so does baking soda and Simple Green with light scrubbing. MEK does nothing, neither does denatured alcohol of course. ideas?
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Tags: aluminum, anodizing, coating, finishing, metal finishing, Plating, polishing, powder coating, Printing
Under metal finishing
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