eCam is a relatively new, free, CNC programming system (a basic CAD/CAM package designed for both Milling and Turning) which shows great promise, especially for beginners to the world of CNC. It’s post processor needs some configuration to make it machine friendly but other than that it all seems good.
Still thinking about the trispokedovetiles design for use as a jigsaw puzzle…
The puzzle would need to be round or hexagonal in shape to provide the maximum number of identical pieces but assuming the puzzle’s picture was printed both sides then each piece could have just one of 6 x the number of complete dovetiles as a possible position.
Just taking a snapshot of one dovetile bounded by a circle perhaps illustrates the possibility.