The following photo gallery shows my general process in developing a spirograph inspired drawing machine, first producing a low-fidelity prototype in cardboard, then creating a final design in laser cut wood.
Low fidelity prototype in cardboard.


Laser cutting using wood.


Pattern using 40-36-100-50 gear set.


Alternative orientation using the 74 teeth gear.

Equipment:
- Laser cutter
- Plasma cutter
- Metal files
- Sandblaster
- Clamps
- Safety goggles
Materials used:
- Plywood
- 1/8 inch aluminum
- Variety of Dowels
- Rubber bands (for marker grip mechanism)
- 1/4 inch bolts, washers, nylon washers
- Markers
- Wood glue
- Epoxy (for wood to metal adhesion)
- 90 lb Card stock.
