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      1. Build Progress:
        • Build in Progress...
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      Build in Progress.
      My machine is a combination of the following;

      Based on Sphinx 55 by Kyo Shinohara link
      Inspired by Sorin Iliesu build link
      Custom plates from Chris Laidlaw - Blue OX link

      Openbuilds has great instructions for the Sphinx 55, so I thought I would just document the things that I did differently to add the MGN12 linear rails.

      For the rails I used the following;
      6 - 500mm MGN12 linear rails
      2 – 250mm MGN12 linear rails
      16 – MGN12H guide blocks​

      To attach the rails I used;
      58 10mm M3 scoket head for mgn12 blocks
      6 8mm M3 scoket head for x/z-axis plate mgn12 blocks
      140 8mm M3 scoket head for mgn12 rail to c-beams
      140 M3 t-nut for attaching rails
      8 34mm M5 scoket head for anti backlash blocks with spacers
      24 20mm M5 button head for plate to end of extrusion ie plate to end of c-beam
      8 30mm M5 button head for thicker plate end connection on z axis
      16 10mm M5 button head for 6mm plate to t-nut/slot connection

      My 500mm rails were just a bit long I had to grind of about 1mm to make them fit between the end-plates on the c-beams. I used the slide in style t-nuts for the rails, I did not trust the twist in style with so many to fiddle with.


      To attach and align the rails I made a small alignment jig that I attached to the c-beams to get the first rail of a pair of aligned to the c-beam. I worked my way front to back snugging the jig down then setting the rails against it a tightening down the rail bolts.

      With the first rail aligned to the c-beam, I then checked the rails with an indicator. However using the jig was enough to get the first rails straight, so using the indicator may not be necessary.


      Once I had the first rail straight and fixed in place I loosely installed the second with the guide blocks and end-plate. That way I could slide the end-plate to align the bearings and then sung everything up.

      The front plate on the y axis c-beam will allow the side rail blocks to slide right off the front, for now I installed a few longer screw and nuts for a stop. I know that I will have to work out a better solution than this when I start to run the machine.
      1. Special Notes

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  • Build Details

    Build License:
    • CC - Attribution - CC BY

    Reason for this Build

    I wanted a small rigid machine for cutting aluminum.
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