Quote:
Originally posted by morphling1
Btw. I thinking of buying used mill, and then put stepper motors on hand wheels, to make me a cnc mill, could you tell me what kind of steppers do you have on your desktop, so I'll know what's the minimum I need. As for controler, I saw one for ~140$ for controling 3 motors up to 2.5 amps, and for software I was thinking turbo cnc, shareware program, I already work with it, and it's pretty decent with lots of users getting feedback for making it better and better. What kind of software do you use?
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I can answer a bit of that since Fixittt already has so many questions to answer
Anways really depands on the size of the mill and the desired rapid speed you wanna achieve. I think all Maxnc mills (fixittt's) come with Pacific Scientific Powermax II steppers with shaft encoders on the CL versions. Running bipolar you get about 200oz/in from these, and they are pretty strong for a little mill. Normally just look around for 100oz ones with double sided shaft (so you can get your handwheels on there)
Bipolar is stronger but you'd need drivers that support it, and its more complicated thus usually more expensive. Unipolar on the other hand is very easy to drive but weaker. I think all drivers these days can do both.