The aluminum can either be anodized or clear coated. Only fairly pure aluminum alloys can be clear anodized though -- do you know what alloy you are working with? Clearcoats range from simple one-part formulations that apply very thin coatings, to two-pack formulations like automotive clear coats.
Ted Mooney, P.E. Striving to live Aloha finishing.com - Pine Beach, New Jersey
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