Y Axis Redesign

by 5trange0ne, published

Y Axis Redesign by 5trange0ne Oct 18, 2012
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Y Axis Redesign by 5trange0ne is licensed under the Creative Commons - Attribution license.

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The MendelMax Y-axis was in need of a redesign. The original design with two plates of aluminum was too unstable and difficult to level. So I came up with a new set of rod holders and a bushing holder / belt clamp combo piece.

The rod holders are split and rest wider than standard. The bushing holders allow the Y-axis motor to be moved to one side. The power supply and electronics can then be arranged underneath the bed without needing feet to extend the height of the MendelMax.

The real advantage is that the bed is centered and leveled by virtue of both designs.

Thanks to Spacexula for testing out everything and for all his feedback.


Print two of each rod holder, and three of the bushing holders.

Wear in your bushings and install them into the bushing holders. Be sure to cut your smooth rod to proper length before beginning. Put two Bushing Holders on one rod and the third on the other rod. Install the Rod Holders on one side of the MendelMax frame, be sure to put the 3mm holes on the side of the Rod Holders facing down. The 3mm holes will be use to secure the rods with 3mm bolts if necessary. Place the rods in the appropriate slots, with bushing holders on them and then attach the opposite set of Rod Holders. Use the Bushing Holders to mark the spacing on your aluminum plate, cut the holes and attach them with 3mm bolts and nuts. To attach the belt feed it through the hole on the Bushing Holder and loop it back over the Bushing Holder, use zip-ties to secure the belt to itself.

If the bed does not travel smoothly make sure that each Rod Holder is tightly secured to the corners of the frame.

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