Assembled base components, including wheels and castors with 1/2" bolts and brackets. Initial design with bolted split wheel struts couldn't hold my body weight without folding. Redesign with cut and welded single 36" 12 gauge wheel struts. Lower slots on the 12 gauge axle supports were cut and ground to fit 5/8" bolts for fixed axles. Axles MIG welded to SSt.