Number Plates or Tags

I needed round number tags, so I made some.
The width is 29mm. Use your slicer to enlarge or shrink them to fit your need.
By halting the printer before the last five layers and switching filament, you can create a very nice two color effect.

I omitted mounting holes, since those screw up the surface. A better idea is to drill small holes where you need them and fasten the tags/plates using small nails.

Created using FreeCAD. The design file is included.