stepper motor crank knob

[HereinCS]

I have a couple of dual shaft stepper motors with 1/4 inch shaft. Anyone know where I can buy a knob or a crank that'll fit? Thanks.

[Dorsal]

http://cgi.ebay.com/ws/eBayISAPI.dll...m=260374443483

[HereinCS]

Perfect. Thanks.

[CarveOne]

Most round knobs with two set screws are made to fit 1/4" shafts like are used on Nema23 step motors. By using round electronics utility knobs you can leave them on the shafts. If you forget to take a crank handle off and then do a fast jog you may cause some damage to the motor. On the other hand, the crank handle probably doesn't leave set screw marks on the motor shafts.

CarveOne

[UUU]

What you need is some kind of machine to make them.

[Pplug]

Yeah a drill press a thread tap and a scroll saw!

[CarveOne]

If you want a large knob, you can find instructions and gcode here on the Solsylva site. It's a knob for a hold down clamp, but it can be used with some modification to the center hole. I just use 1" diameter plastic knobs and leave them on the motors. They can be cut from just about anything that is solid enough. I suppose that Nylon or Delrin dowels can be cut to length, center drilled, then possibly just pressed on.

CarveOne