MendelMax Minimal Y Rod Mount V2 (Parametric)

by cobra18t, published

MendelMax Minimal Y Rod Mount V2 (Parametric) by cobra18t Feb 11, 2013


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This is a replacement Y rod mount for MendelMax type printers.

I have uploaded a stl part for both normal 8mm rods as well as the larger 10mm rods.

Advantages over stock part:

  1. Clamps rods to aluminum extrusions, ensuring more level travel

  2. Since rods are higher, less Y carriage elevation is needed leading to a lighter carriage.

  3. Uses little plastic. Consists of just 4 small parts.

  4. Parametric

Advantages over my V1 minimal mount:

  1. Fewer parts/easier to assemble/easier to print

  2. Uses M5x20 socket head screws which are already recommended for MendelMax builds. Socket heads are also easy to tighten from the side with pliers. M5x16 might work with 8mm rod, change m5_length to 16 and try.

  3. 10mm Y-rod ready, change rod_diameter to 10 and print

  4. Beefed up for durability (I recommend ABS or Polycarbonate for durabilities sake)

Release under CC-BY-NC-SA-3.0
by Thomas Fulenwider a.k.a. cobra18t


  1. print 4 pieces
  2. use 2 T-nuts or 2 m5 thin nuts for each piece in the underside of the aluminum extrusion
  3. for each piece, slide onto Y-rod, mount with 2 m5x20 socket head screws
  4. hand tighten screws and then use pliers on the socket heads for final tightening (socket head screws are tall and have knurling around the perimeter to aid in tightening)

OpenSCAD editing:
This uses configuration.scad.dist and functions.scad from Prusa's i3 project. These must be in the same folder as YMotorMnt_INV.scad. These files are found here:

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I got these parts with my mendelmax kit i bought. However the rods can still move :s

How do you adjust the distance or something once its all built? I mean the Allen does not fit to screw and unscrew the bolts...

Can this be modified for a 6mm Rod?