Circle Coaster Blanks for UV Printers

This is a set of blank, 4 inch in diameter coasters and holder for use with uv printers like the eufymake e1.  They are setup to print facedown with the textured pei plate so the faces have some texturing to them.  There is a 1mm drip line around the white face, and the bottoms have a 1mm inset so that you can add some cork or rubber to the bottoms if you wanted extra grip.  The holder can likely house 8 total coasters without any added grip to them.