This plan was a donation from GrblGru, the developer behind the 3D-simulation for cnc-machines with the same name. The complexity of the puzzle seems ...low, but taking the pieces it's actually quite hard to solve.
My build was done on a desktop cnc-machine by
Stepcraft
from 6.5 mm beech plywood using a spiral-toothed 1.2 mm flute. The other is build with two layers of baltic birch plywood, doubling the size. However the drawing is created for using 8 mm material!
I created to versions of the dxf for laser which is closely nested an uses only single cuts and a version for cnc-machines. The drawing must be scaled... to match the material width.