benjamins mt druitt tafe robot

base is made from 4.5mm polycarbonate, cut on cnc router

castor is made from 3mm aluminium sheet folded and Tig welded
Wheel is is made from black acetal and has 2x 22mm ball bearings pressed in
castor rotates on another 22mm bearing with aluminium cap
castor shaft is also aluminium for weight reduction

gearbox is a off the shelf tamiya item