To make this rather retro looking coaster, you need the following:
-A laser cutter (preferably) or you could try with a saw and a lot of sanding/filing.
-Tin can lid
-A suitable glue to glue acrylic together
-A suitable glue to glue the tin can lid into the hole.
1. If using a laser cutter, you should firstly draw 2 circles the same size, then in one of them draw another one the size of the tin lid, this will be cut out and act as the hole for the lid to go into.
2. Once you have cut the circles, you need to glue the circle with the hole to the solid circle.
3. You then need to glue the tin lid into the hole.
4. You now have a tin can coaster.
THIS INSTRUCTABLE WILL MAKE 1 COASTER