thingiverse
Have not tested it. approx 3 inches by 2.8 inches. made in tinkercad eyeballed the wheels they do fit snug from the looks of it and will have play after they are on. Should roll. you will need a rubber band threw the loop then on the "spoon" will upload pictures once tested.
UPDATE: I moved the items closer to fit smaller printers also wanted to note you will also want to tie a string from the part of the spoon just before the round part then attach that to the back axle so your catapult spoon will stay in place when u shoot it.
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