Retromaster’s Electronics Projects

…related to old computers and other assorted stuff…

MF70 CNC Progress

Posted by retromaster on November 23, 2009

I’ve had some progress with my Proxxon MF70 CNC conversion project. X and Y axes are complete, and so far it seems to work fine with no significant vibrations at a decent speed. I went through a few design ideas and eventually came to choose a rather simple one where I replaced the lead screws and made new nuts out of delrin for both axes.  This had the nice side effect of a somewhat increased resolution as well. In addition to the motor mounts, I also built the aluminum couplings between the leadscrews and motor shafts.

Now it’s time to work on the z-axis, which should basically be the same. Once the machine is complete, I intend to use it to manufacture parts for a new design for the Y axis, where I’ll be able to extend the travel of the axis by about 20mm. This should enhance the usability of the machine greatly.

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