V2 UPDATE IS OUT NOW
I wanted an easy to print counter for tabletop games and trading card games such as magic: the gathering. My criteria for this design was that it was to be easy to print (no supports needed) and easy to assemble (meaning not requiring non printable components or glue). Please follow the instructions for assembly shown in the post-printing pictures. You will need to print 2 plates, 2 rings, 2 cores, and 1 shaft.
First insert the shaft piece into one of the plates until it clicks together
Insert the core of the digit counter into the ring alcove (for both rings), depending on the direction of the core the ring will click down or up easier (I recommend making it click down easier for all that life you'll be losing :p)
Ensure that: The 2 cores are going in the same direction when inside the rings, and that the square hole in the cores are aligned as shown in the picture
Slide both the core-ring assemblies onto the attached shaft (you may want to give them a mild sand on the flat sides to remove any burs)
Place the final plate onto the shaft and push until it clicks into place.