Dane Armory Posted August 3, 2014 Report Share Posted August 3, 2014 I got a question from one of our member and could not answer it. Q1 He wanted to know is a raw alumininum needed to be anodized before it could be coated ? Q2 .I sandblasted a upper reciever and handguard today at 75 to 80 PSI, It turned outdark grey to frosted black. The surface coating is hard, do I need to take it all off to get a good finish or is a light scuff good enough ? Quote Link to comment Share on other sites More sharing options...
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