Here's a run down on the different types of aluminum I use for my discs and ring blanks:
Anodized aluminum is much harder and has a coating on it that makes it safe for your skin. The cool thing about this is that it comes with a beautiful finish and a protective piece of plastic which protects the disc while you're working. You can even stamp with the plastic on and then when your done, peel it off and beautiful sparkle!
***This is great for discs because there no finishing work on the surface.
Pure 1100 aluminum is my favorite. It is food safe and safe on your skin. It's very soft so when you're doing metal stamping it takes a very clear impression and is very easy on your tools.
***PURE Aluminum 1100 is great for anything that is going to touch your skin. It is as strong but gets stronger as you get thicker gauges.
3003 Aluminum is stronger but not as pure. THIS METAL IS MEANT TO BE COVERED OR FINISHED IN SOME WAY BEFORE BEING WORN.
***This is great for covering with fabric or as a polymer clay base.
Hope this helps you decide what metal is best for your aluminum discs, aluminum cuffs, or ring blanks at Gotta Getta Deal on ETSY!!!
Have fun creating!!!