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Comandante C40 Hand Grinder

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  • #31
    Hi Gavin.

    Haven't motorised a Comandante but it would be a very simple proposition as the Comandante has a hex drive shaft.

    You would need to make a disc cover to stop bean hoppers, but a small electric drill can be either connected direct to the shaft or by use of a suitable hex driver.

    A 12volt Ozito 2 speed driver with battery and charger can be had from the big green shed. I got one recently for $40 and it has enough grunt to do the job on similar size hand grinders. It also allows plenty of speed control.

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    • #32
      I actually did try to hook up my electric screwdriver and found out that the shaft is actually smaller than the actual standard hex.
      I might pop by Bunnings to look for an adaptor.

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      • #33
        If it's European it will be metric so try a 6mm hex nut driver, if that's too large try the next smaller which will be 5.5mm. Yes that's an odd size but its also the standard hex head on an M3 bolt.


        The standard hex drive is 1/4" = 6.35mm. Blame the Seppoes.

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        • #34
          I don't believe the Comandante uses a standard hex shaft - looks to be a custom shape closer to a torx bit. Probably to avoid people hooking it up to drills

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          • #35
            Sorry to bump an old thread, but this shows in Google. There's a recess to the shaft (as you've said, custom. Not as aggressive as a torx), but the handle is a standard hex driver. A 5.5m hex bit fits in the handle with the same amount of play (a surprisingly large amount). If I find 5mm works better I might remember to come back here and edit this.

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