PlyBot Plywood Robot

The PlyBot is a 5" x 7" differentially steered robot made from 1/4" aircraft grade plywood. It is shaped from a rectangular piece of plywood, and requires only minimal cutting and drilling.

It is powered by two Tamiya gear motors (made from kits) and two Tamiya 58mm diameter rubber wheels. A steel ball transer (aka ball caster) is used for balance on the end opposite the motors/wheels.

Found in Robot Builder's Bonanza, 4th Edition Chapter 8, Build a Motorized Wooden Platform

PlyBot Parts List
1 5" × 7" 5-ply 1/4"-thick birch plywood
Via Amazon (12" x 24" sheets)
Via Amazon (6" x 12" sheets)
2 Tamiya Worm Gear kit, model 72004
Via Amazon
1 Tamiya Narrow Tires (pair), 58mm diameter, model 70145
Via Amazon
1 11/16" diameter ball transfer (i.e., ball caster)
McMaster-Carr, item #5674K57
6 Assembly hardware (order in multiples of 10):
4-40 ×1/2" machine screws
4-40 nuts