Resettable handwheels for mini lathe

Resettable handwheels made for mini lathe


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Resettable handwheels made for the MJ-189 mini lathe (Emco Unimat 4 clone) . Source included for customization.

Two different handlebar sizes. 60mm and 40mm handle-to-handle distance. I recommend using the larger one when possible sine it gives smoother motion, but it might be in the way if/when using a compound slide.

Materials and methods

Suggested hardware;
2x M5 nuts (to lock the handwheel to the threaded rod on the lathe)
2x M4x20mm socket cap screws for the handles
1x washer suitable for M5 hardware (to lessen the wear/friction on the hand wheel)
2x small 2.5-3x10mm wood screws for mouting the handle bar to the base (the tension of these also control the friction of the scale ring).

For notes on customization and making the scale strip. See readme_at.txt



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Mini gw051 avatarEwald added this to the Tools collection ago
Mini dive avatarthorn commented ago

Just a small clarification. The "Mj189 Hand Wheel * Base" through hole is designed to have a smaller diameter than the lead screw so that it can be screwed onto the threaded part of the lead screw. This will fix the base and whole assembly in place and allow it to be locked down by the outer lock nut.

The original wheels have threaded inserts that solve this.

Mini photo 18366drayson added this to the tools & co collection ago
Mini dive avatarthorn commented ago

The STL files is version 104, while the source is 105. The difference is just some cleanup in the code.

Mini dive avatarthorn published this design ago