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Step 20Make new wheels
Now that I have changed the railes from strips of wood to J-channels I also need to change the wheels I have jammed onto the stepper motor.
The new wheels will need to fit down into the channel. I didn't find any good parts for this in my pile of computer guts, so I just cut them out of some scrap luan (fancy 1/4" plywood) with a whole saw.
The hole saw cuts a 1-1/2" diameter circle with a 1/4" hole in the center. This works out just right to jam onto the stepper motor shaft and it fits into the J-channel.
Note: It is sometimes hard to get the round peice out to the hole saw. I have two tricks. I lubricate the inside of the hole saw with a 'Cut-ease'. I use this pretty much whenever I drill or cut anything, because it makes everything easier and quiter ( I am usually working at night). I also have a tool I made that fits between the teeth of the saw so you can pry ou the plug. I made this out of a screw driver, by grinding down the sides, bending over the tip, and then sharpening the tip. This tool is also useufl if you are drilling a hole in drywall. You can drill partially through the drywall, leaving the plug in teh wall, then stick thie tip of the modiefied srew driver into the pilot hole and pry out the plug. This is handy if you are interested in the hole instead of the plug.
The new wheels will need to fit down into the channel. I didn't find any good parts for this in my pile of computer guts, so I just cut them out of some scrap luan (fancy 1/4" plywood) with a whole saw.
The hole saw cuts a 1-1/2" diameter circle with a 1/4" hole in the center. This works out just right to jam onto the stepper motor shaft and it fits into the J-channel.
Note: It is sometimes hard to get the round peice out to the hole saw. I have two tricks. I lubricate the inside of the hole saw with a 'Cut-ease'. I use this pretty much whenever I drill or cut anything, because it makes everything easier and quiter ( I am usually working at night). I also have a tool I made that fits between the teeth of the saw so you can pry ou the plug. I made this out of a screw driver, by grinding down the sides, bending over the tip, and then sharpening the tip. This tool is also useufl if you are drilling a hole in drywall. You can drill partially through the drywall, leaving the plug in teh wall, then stick thie tip of the modiefied srew driver into the pilot hole and pry out the plug. This is handy if you are interested in the hole instead of the plug.
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