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Original post by: Tom Woods ,


I tried the trick of coating a bare Al plate with Dry Graphite (Moly) lube spray and then laser etching and then rinsing off the lube with alcohol and that did not work.  I'm interested in if the anodized Al etch works or not.   I suspect it needs to be the anodization type that is insulator versus conductive type (so the heat doesn't conduct away as fast).