BOM 6x – 608 Roller skate bearings 2x -100mm 8mm all thread rod. 5x - M8 bolts. 1x - 40mm M8 bolt 2x – 6mm ID. 15mm OD bearing (had these laying around) find what you can, modify the files as necessary. 1x - 60mm shaft (matches the bearings) 12x - wood screws 1x plank of wood. Approx. 300mm x 450m 3x Spacer wood 2x4 is what I used. ~ 50mmx100mm 1x – Geared Globe Motors Model number 409A502 1x – 19v PSU 1x – 5A switch 1x – Ikea $7 table leg, or 50mmx50mmx400mm chunk of wood. BOM Standard size. For standard size, I still use metric bearings. 6x – 608 Roller skate bearings 2x - 5/16 all thread rod. 5x - 5/16 bolts. 1x – 2inch 5/16 bolt 2x – 6mm ID. 15mm OD bearing (had these laying around) find what you can, modify the files as necessary. 1x - 60mm shaft 6mm diameter (matches the bearings) 12x - wood screws 1x plank of wood. Approx. 12inch x 16inch 3x Spacer wood 2x4 is what I used. 1x – Geared Globe Motors Model number 409A502 1x – 19v PSU 1x – 5A switch 1x – Ikea $7 table leg, or 2x2x16 chunk of wood. EDIT: after a few questions the motor I used is built by globe motors, however it has an HP Part number of "02566 - 60448" I included the SKP files on this design so people can adotp it to different motors. I suspect nearly any 25-40RPM geared DC motor would do, within reason that is.