Motor Accessory for Drawing Machines
This is a small motor unit to drive my drawing machines. The motor unit meshes onto existing gears on your drawing machine. It does not require any changes to your drawing machine. It uses a 6-volt battery for power—battery not included.
One great feature of the motor unit is that it will just move out of the way if your penholder rod bumps against something. The motor unit runs at 50 rpm's so its fairly slow and steady. The small motor has enough torque to drive even the most elaborate gear train easily. Drawings are more accurate than hand cranking.
The gear is interchangeable so it can be used on all my drawing machines.
Note that the DuoGraph/Hypnograph version comes with extra parts to improve the Hypnograph performance. If you are just driving a DuoGraph then these parts are not needed. Please order the Cycloid version and email me so I can send the appropriate gears.
The kits contain:
• motor and wiring
• the motor stand
• wooden wrench
• 3d printed fulcrum slides
Note that the package does NOT include a 6-volt motor. These are available at hardware stores, big box stores, or from Amazon. Cost is $4 to $10 for the battery.