Go to Vector Art 3D, Inc. - Dimensional Clip Art for CNC Routing and Engraving
Then to free 3d models, go to image number 38310 style A regular.
Download it then expand it to at least 40mm x 60 mm. And machine it.
You can also download free machinist software for free from the same website and u can use it to machine this model
Let me know how u would hv gone

Thanks