Had to give this a try, artwork is so good!
- Calendar is about 14"
- 1/2" MDF
- 60° vee
- Black primer/spray
- Rub n Buff - Autumn Gold
It looked like it need a bit more substance, so I added a bezel, just a ring of same MDF with a shallow rabbet for the calendar to sit in.
I did some testing with a 90° vee but the finer lines cut too shallow.
Shout out too Sandy Eggo for creating/sharing the amazing artwork (file from thingiverse.com).