Needing to make some decorative badges from AL. Thickness if 0.5mm. Typically I use Stainless Steel and polish the top to a Mirror Finish (Ra= 0.4 or better).
What grade of AL would you suggest to get a mirror type polish finish?
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Needing to make some decorative badges from AL. Thickness if 0.5mm. Typically I use Stainless Steel and polish the top to a Mirror Finish (Ra= 0.4 or better).
What grade of AL would you suggest to get a mirror type polish finish?
Welcome, the harder grades are better 6061/6063 but aluminum is soft and it will scratch really easy. I mean microscopic dust trapped in the skin of your finger will leave a smooshed (technical term :) ) scratch. The only way around that is to have them clear anodized after polishing.
Anodize? and you can get shiny colors as well on aluminum....
[URL]http://www.engineersedge.com/anodize.htm[/URL]
[URL]http://www.engineersedge.com/sulfuric_anodize.htm[/URL]
[URL]http://www.engineersedge.com/chromic_anodize.htm[/URL]