The kids love it and I am again impressed with the options I have with my little K40 and HDF.
The small gears are relatively hard when cut, more stable as MDF and even the smallest parts do not fringe out at the edges.
I have found a small supplier who delivers the plates to size (320x230) for USD1.38 each. Sometimes I also pick up whole plates and saw them out myself, so of course they get cheaper.
6 mm/s, 23% -ca.7mA, 2 passes
… by the way, the original design is not mine, but violently modified by me with LigtBurn