Frosthaven Monster Box Lid remix

It seems that they've changed the monster initiative trackers for Frosthaven. So to be able to re-use the monster boxes from Qualith's Gloomhaven inserts, I've made this little adaptor for the new frosthaven shape. 

The thinnest section is 0.6mm, so printing at 0.2 or 0.3mm will both be fine. You might need to make sure that printing thin walls is enabled, depending on your slicer, but it's meant to be 1 wall thick on one side to increase the flexibility when inserting the marker. 

I've added a little bump to help with sliding it out of the top of the box, and a slight chamfer to indicate which way should go in first, but it should work in either direction.

If your tolerances are better than mine then you might need to adjust the width for a tight fit in monster box, so I'd test print one before going for the full 48 required.