I also dabble in CNC and this was a design I had for a wall clock. I pulled the SVG in to Tinkercad so that I could create an STL file to print. I made two versions and one will print on a 220mm bed and one on a 250mm. I have also included a hanging hole which a lot of other clock designs don't include and a version which hooks on to a Pegboard, or Ikea Skadis system.

The clock parts are available in Maker's Supply, although I used a clock I bought for my wooden models. I don't like the hands that are in the picture so I have included a set to print.