Graphite Forms + Devices

Conical shell form attached to a 12V DC motor. The cone's base was sanded to an angle which causes the device to be off-balanced which gives a rougher, more sparatic movement. This lack of balance, in rotation, should give the device uneven wear patterns as well as complex + changing markings on the drawing surface.

Device resting upright on slanted base.
Device on side w/view into the hollow center of cone.
Device on side.
Graphite shell - approx. 1/4 of a sphere w/sanded edges + three points.