Yes Jeff, not sure how I can work out the weight out I night be able to use a 1 inch undrilled flange if I can find them, they would be fairly cheap and I could then get the 3mm discs made the same size and just weld them together. The OD is not critical because I think I could go up to at least 200 diameter without any issues. As long as I end up with at least 800 grams +
