A hex base for gloomhaven monsters, the outer ring is numbered 1-18 and the center rotates for keeping track of monster HP. The front slot is for holding modifier bits.
The print in place version is actually a total redesign with a tighter fit, thicker, more solid piece holder, cleaner font, and the pointer arrow is engraved rather than embossed.
Some people have commented that the inside part of the print in place version could be sized up a notch for a tighter fit, i left it as is because that's what works best for my printer and settings, but if it comes out a bit loose for you, try scaling up the center part by 0.5mm across the diameter.
GHd12v2 is a print in place 12 sided dial - i have not printed this yet, it is experimental.
Smaller layers will increase quality a lot, as the numbers are engraved on a chamfered edge.
The dial and ring as separate parts come apart easily but are held in place by the cardboard insert while in use.
The print in place option has pretty low tolerance as I wanted a tight fit that clicks into place at the center of each number.
If the dial doesn't turn, rather than twisting it (I snapped the first one trying to twist it free) try supporting the outside ring with a bottle cap and gently tapping the center part from the top and bottom - I used a small screwdriver and hammer for this.