Or this: by chance, Jim had found and repaired a broken large format printer, so it was possible to print out full-sized plans for cutting the cupcake base. (Of course it wasn't strictly necessary, but what a treat to be able to just glue the plans over the plywood and cut on the lines.)
Or this: after eyeing the plan, Emilio went back to his truck and pulled out a circular piece of plywood that he'd found a year and a half ago and been carting around since. It was just 6" wider than the diameter we needed.
Everyone got a chance to help make the base. Cutting with a jigsaw:
Starting pilot holes with a drill:
Young makers guiding younger makers:
Wheels, casters, and motors were mounted. It may be that the ring cut from around the base will be able to serve as part of the structure, like so:
We'll have to see how it all works out.