I’ve done some of my own. These 1st ones are mirrored where I’ve removed the mirror backing from the rear using a reverse image and then I paint the areas that have been removed. When you flip the mirror over you have the painted image showing with the mirror in the remaining areas.
And these were for a client that I made a bar for. Just on 1/4" Maple plywood and I put a cork backer on to keep them from slipping around. The mirrored coasters also have the cork backer.
