Hadron (ORD Bot) X and Y Idler Pulley Brackets

by flurin, published

Hadron (ORD Bot) X and Y Idler Pulley Brackets by flurin Jan 19, 2013
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The Idler Pulley Bracket is fixed laterally by 4 screws and has 2 additional screws for belt tension adjustment.

Note, Jan 20, 2013:
The Idler Pulley Bracket for the X-Axis needs some modifications, I'll upload a new version soon.

Update, Jan 20, 2013:
X-IdlerPulleyBracket.stl uploaded *.

Update Jan 21, 2013:
IdlerPulleyBracketV2.stl uploaded.

Update, Jan 27, 2013:
Added MisumiSpacer for the X-Axis.


  1. Remove the original Idler Pulley Bracket.
  2. Remove the Idler Pulley from the original. Be carefull to not loose the spacer.
  3. Mount the Ider Pulley into the new Bracket.
  4. Insert the two M4 x 16mm Screws and Nuts for the belt tension adjustment.
  5. Mount the new Bracket with 4 M5 or M4 x 10mm screws.
  6. After satisfactory adjustment, tighten the 4 lateral screws.

*) The X-IdlerPulleyBracket has to be printed with support material.

Update, Jan 21, 2013:
The IdlerPulleyBracketV2 can be printed without support material. You can easily break out the "plate". V2 can be also used for the X and Y axis. I had to reduce the dia for the lateral screws to 4.2 mm (M4).

Update, Jan 27, 2013:
Optional: The MisumiSpacer can be inserted between the X-MakerSlide and the IdlerPulleyBracket.

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Can you post the source? Hopefully in scad, but whatever will do :-)

The V2 does not have any holes when Slic3r cuts it. I just realized that after the print. Oh well. I just drilled holes in them.

Thanks for your feedback. I've just checked the V2 STL and used slic3r (0.9.9) but I didn't see any missing holes. What do you mean with "when Slic3r cuts it" ?

When I press "Slice with Slic3r" in Repetier Host, the generated g code for the object does not inlcude the holes on the side where the mount attaches to the makerslide. It could be that there is an issue with my Slic3r or my Repetier Host. However, the ord Z motor mount prints just fine with all the holes. And when I combine your idler mount with the z mount in the same platform and try to slice it with slic3r, they both will not have holes on the side. Weirdest thing. Its cool though. I just drilled holes in the sides.


Which slic3r version are you using?

As you can see with Thingview on the top of this side all the holes are there.