This is a calendar and also a puzzle. The original idea came from one of my favorites - TopSpin

**updated 17 July 2021

List of files (STL)

calendarPuzzle_Months
calendarPuzzle_Days
calendarPuzzle_BlankButton
calendarPuzzle_dotButton
calendarPuzzle_smileButton
calendarPuzzle_mainbody_v3
calendarPuzzle_ring_v4 (this one fits better, previous version was too loose)

Display option

A ring (optional) in a different color can be used to circle the date and kind of make it stands out a bit.

Buttons for month and day

Buttons for months (calendarPuzzle_Months) and days (calendarPuzzle_Days) are in separate files in case you like multi-colors. 12 buttons for the months of course, and considering the day can be viewed as two digits (01 to 31), 12 buttons (0-9, 1, 2) were made for the days. The space in this calendar can hold a total of 26 buttons, that means we can include two blank buttons or emboss with some symbols. I have made a button with a dot (calendarPuzzle_dotButton) and another button with a smile (calendarPuzzle_smileButton). The bronze color smile is really attractive! Well, in case you might like something special, please use the included blank button (calendarPuzzle_BlankButton) to emboss your favorite month-day separator.

Assemble instruction:

1. print the files in your favorite colors.
2. slide in 26 buttons from the opening, put the last button in the lid before closing.
3. slide the buttons along a circle to adjust its location. quite a fun puzzle. enjoy~~

This is my first "big" design after assembling the Original Prusa i3 MK3S+. The whole design process is very enjoyable and really look forward to try out other design soon.