Mechanical Dry Erase Board

Step 9 Mount the motor, set the gears, mount the Y, Close it up.

You can mount the motor on whichever side you want, I chose the right.

• I explain how to make the gear shaft in the following step.

I used the same method to mount the motor as I did with the Y component. I used an 8 inch by 4 inch block, drilled a 1 and 1/4 inch hole in it, and squeezed the motor in. I then drilled that to the bottom of the board behind the plank. I placed a gear on the motor, and fastened it with putty epoxy. Wire up the motor with speaker wire.

Across the board on the other side I mounted another gear, at the exact same height on a duplicate of the 8 by 4 block. I attached the gears with a very long roller chain; about 10 feet.

Before you mount the Y, you want to make sure that you run speaker wire through the bottom X bar. This will be attached to the Y component motor. Flip the Y component around, so that the motor is on the bottom, slip the speaker wire through the bottom of the X bar, and attach it to the Y motor.

In order to harness the Y component to the X roller chain, I used a similar method to the pen component mount. I nailed 2 gears to the back of the Y component and made sure that they did not move, ie. used some epoxy putty.

I then placed the Y onto the bottom X bar, and let the gears on the back of the Y rest on the X roller chain. I then used putty epoxy to harness them to the roller chain.

Make sure that the x bar gives you enough room so that you can properly connect the Y component to the roller chain, I was within a 2 mm of the board... be careful.

I took pictures after I painted it...

Once you get the Y hooked up, and the wires threaded through, place the upper X bar onto the board. Do this by placing the board flat on the ground, and moving the Y component to the middle of the board.

Fit the upper X bar on top of the casters, use a level, mark off where the T connectors come in contact with the board, and drill them in.