Mock up the proportions
Cardboard before plywood.
- Tape a 48" × 24" outline on the floor. Make a side silhouette: 44" body, 8" hood and 36" cabin. Allocate 2" for each bumper to reach 48" overall.
- Mark the 34" counter line and 38" maximum closed roof/trim line. Try reaching the ice-bin position and moving through your intended doorway.
- Make the 36" × 10" side shelf in cardboard. Check the full 34" open width, standing space and both support-leg positions.
- Select the actual casters and ice bin now. Measure caster mounting height and obtain the bin manufacturer’s cutout template before final cuts.
Go / no-go: the size fits the route, the counter feels comfortable, and the chosen bin fits the 20" × 14" envelope.