DND Nickel bases

**An improved version of these is available on Makerworld here:** https://makerworld.com/en/models/1235398-dnd-coin-weighted-miniature-bases-1in-25mm

Remix of the awesome miniature bases made by Valandar, see here:
https://www.thingiverse.com/thing:3067745
https://www.thingiverse.com/thing:3314896

I added a circular cutout in the bottom that will friction-fit a US nickel. The hole in the middle is so that a nickel can be popped back out with the help of a paperclip or SIM removal tool.


#### Tolerances
On my standard Ender 3 these print with a range from just barely tight enough to hold a nickel to so tight that I have to snap one in with a pair of pliers- but most are just right, and a nickel can be easily snapped in and out without falling out during use.


If these don't print with quite the right fit for you, you can probably just scale an entire base STL file by 1-2% to get a perfect fit on your particular printer. But if you want to properly scale just the hole I've included