One more coaster (as if there aren't enough here already). This is a two part model - the base (frame) and trim are split for two color printing, while the calendar is separate and is pressed or glued into the base/trim model. Two versions of the coaster base are provided. The version with the hole for the calendar intead of a pocket will use less filament - the trim will work on either version.

I recommend printing the calendar standing on its edge as shown. The details turn out much nicer. I printed the calendar with a layer height of 0.12mm and the base/trim at a layer height of 0.2mm.