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This is a model that I designed a while ago, it was meant to be 3D printed or CNC routed.
The model is designed to be cut in 1 mm plastic sheet, the openings on the pieces have this dimension, so if you want to cut it on a thicker material you will have to scale the model up, I would used a 1/32 2 flutes flat milling bit to cut it on my Zentoolworks 7x7.
For 3D printing a well calibrated flat hot bed it a most.
I have attached the .dwg file with all the flat pieces for cnc routing, a .stl file for 3D printing and a .stl of the completed model.
Please let me know what you think, as always your comments and tips will be greatly appreciated.