Aluminium canister seals
If you are into card making or die-cutting of any sort, use these canister seals to sharpen up the cutting edges of your die-cutting tools. They are usually found on all sorts of food packaging –- those in the image came from a canister of dried milk, gravy granules and similar. With few exceptions, when you buy die-cutters or punches, hidden away in the instructions somewhere there will be a note telling you to sharpen up the blades by cutting aluminium. Not everyone has aluminium sheets to hand, so these aluminium canister seals are the perfect solution. Just keep them well out of reach of small children of course as they are very sharp, and even more so after they have been passed through punches and die-cutting machines.