Aluminium Square Stamping Blanks - 15mm by 15mm £0.30 Quantity: at £0.30 each Add To Basket These are 15mm by 15mm aluminium square stamping blanks. They are die cut so have nice rounded edges so are not sharp. Picture shows them stacked these are the smallest blanks. They are cut by hand from 1.2mm thick/16 gauge aluminium so are nice and thick to stamp on and get a good impression. As they are cut by hand the sizes and shapes do vary slightly. Aluminium is a great alternative to sterling silver as it does not tarnish, is light weight and you can polish it up to give a lovely shine.