Ohm/How to build an OHM

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The Open Hybrid Model (OHM) has several advantages over the generic Mendel model. Mainly, it is more flexible. The printing board is designed to easily pop off the machine without unscrewing any parts.

All STL files mentioned in this article are referring to and can be downloaded from OHM Parts section.

Mechanical Construction


To make the frame triangles, 6 frame vertices, 2 bar clamps and 6 threaded bolts are needed.

Frame Vertex part
Bar Clamp part

X-Z Assembly

Z Drive System

OpenY Axis



Spool Arm