Shake Table V5

Tweaked 2/10/19 - Clarified dwgs, added customized supports to drive shaft - better than standard supports. Lay triangular support flat on table. These supports can be snapped off afterwards with pliers. Also please note: this is really tough little table but the drive shaft is prone to fatigue where the hex meets the round shaft - I have printed this in Bridge Nylon in my latest iteration - which although it is more flexible is probably also tougher.

Mark V upgrade 3/9/18.

The application: Students build towers from spaghetti and marshmallows then see if they can take the seismic forces from this little table. Upper table oscillates on 4 parallelogram arms, two of which are driven by a cranks. Cranks in turn are attached to a drive shaft with a 1/4" hexagon allowing it to be rotated by an electric screwdriver or cordless drill.

This upgrade adds proper bearings as plastic on plastic galls at high speed; replaces pivot pins with brass ones removing failures of locking pins