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For his final project in the course How To Make (almost) Anything, David Carr designed and built this
3-axis CNC milling machine
. It’s probably not the most precise or powerful device, but it costs less than $90 to build, and can mill PCBs, wood, and even light steel. Drawings and schematics are available on his website.


  • Joe Zimmerman

    I’m thinking a real stepper driver might be safer on your parallel port. Any more details how you plan to keep your PC isolated from damage would be nice.

  • tigerzero

    Impressive results! This kind of makes me wonder how well mine would machine PCBs/steel. Well… now I’m going to have to try it :-) Kudos to David for his economical design!

  • https://me.yahoo.com/a/P5K7XH9kg5VnMXn4Aqv_BcR5YFxxDhidh9kmpQ–#342e9

    I’ve been wanting to try my hand at building a *cheap* CNC machine for quite a while. This looks perfect (apart from the lack of build explanation and/or detailed docs).

    However, I’ve looked at the parts list but I can’t figure out the supplier codes. Anyone have an idea what these refer to?

    VXB
    SDP-SI
    McM

    Including the part numbers was a nice touch!

    Good job, David!

    • tigerzero

      Hmm, I know SDP-SI is stock drive products (https://sdp-si.com/eStore/), I bought my toothed belts and pulleys from them.

      VXB appears to be a skateboard bearing company (http://www.vxb.com/), I know I was originally looking at rollerblade ABEC bearings for some of my parts, they’re very reasonably priced.

      And I’m guessing McM is McMaster-Carr (http://www.mcmaster.com/), which is pretty much the best site ever ( I <3 ).

      Hope that helps!

  • Jeremy