My kitchen clock broke down and I thought it would be a nice idea to print a new one. So I bought a radio controlled internal clock at Conrad's. Take one with a long shaft. And I drew a new clock around it. The numbers are printed seperately from the plate, so you can choose different colors. There is a 0.3mm distance between the numbers and the plate, and on my machine that fits just perfectly. You can glue the numbers in place.

The plate is oval, 200mm wide 150mm high. The numbers have a height of 75mm

I used this base-clock: https://www.conrad.nl/p/zendergestuurd-uurwerk-draairichting-rechtsom-wijzeraslengte-17-mm-hd-1688mrc-9080c11c-439814

I bought some hands with it, but they proved not to fit. Conrad seems to have no hands wit a good fit for this brand, so I adapted the ones I ordered. I suggest you find a clock with hands that fit.