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Make a CNC Hot Wire Foam Cutter from parts available at your local hardware store

Step 9ACME Screw (step #3)

ACME Screw (step #3)
A simple way to connect between the motor shaft and the threaded rod, is a plastic tube.
A better way is to make this "Coupler" out of rubber - this will help in case the motor shaft and the threaded rod are not aligned.
We later moved to ACME screws that can be found on www.use-enco.com. These ACME screws come is 3' and 6' lengths. Since their diameter is 1/2" and the motor shaft is 1/4" you will have to machine these ACME rods to 1/4" diameter. Use your lathe of stop by at a machine shop and they can do it for you.

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