I wanted a big clock I could print on my A1 mini and couldn't find one I liked.
I found a similar design on Pinterest and thought the perpendicular lines would be perfect to hide the junctions of the 4 panels!
The final design is as big as I could make it fit on the A1 mini, 34cm diameter, bigger than what any Bambu lab printer could print in one go.

To assemble: 
1. Print the first plate with the quarter of the clock body four times, all are identical.
2. Join the four panels using the joints, the last one will need to enter diagonally.
3. Depending on your printer/filament the joints might be to loose on their own, if they are glue the panels together.
4. Insert the clock components main module from the back in the square hole, it should fit snuggly.
5. From the front, use the provided brass ring and nut to hold the electronics in place, ring first then screw in the nut.
6. Hide the nut using the printed nut cover, then screw in the printed ring to hide the rest of the center.
7. Insert the pointers, the seconds pointer is hard to print and insert due to the tight hole. you might need to sand the tip, or instead blue the printed pointer onto the seconds pointer that came in the clock components kit

To hang it I used two sided tape. if you want to use a nail you can print something like this: universal picture frame hanger - Free 3D Print Model - MakerWorld and glue it onto the clock