.... I am interested to see how you set it up...Mike
Do you mean how I set this up on the CNC? Work holding method etc.?
If so, that was more or less standard technique for double sided work with unsymmetric alignment dowels for the big version. The boards were held with corner screws on the spoilboard.
for the legs I used sturdy tabs at the ends and for the seat surface I screwed the seat plate also down through the dowel holes so that I did not need tabs for the final cutout. But this was a single piece and I did not mind the bit changes.
For the set of 6 mini stepstools I did not like the dozens of tool changes and screw down. For that I made a "vacuum fixture" (a.k.a. a few weatherstrips on the spoilboard) with alignment dowels for the top as well as for the bottom side so that I could swap the 6 blanks in precise position and make all cuts with a bit before switching to the next bit. It was precise enough so that I did not have to re-zero the bit after each blank swap.
I still have the bottom fixture on the machine so I took a picture. A bit primitive but it works well for a small series production. The vacuum is drawn through the small 1/4" hole in the spoilboard (hard to see in the picture).
I had to cordon off the center handle hole and the dowel holes as to not lose vacuum when these features and the leg mortises are cut through for the bottom side.