The Part Library is OSE's repository of accurate 3D CAD files. See LifeTrac Construction Set#Modules for background to this work.

LifeTrac Primitives

We are listing all the modules here for porting to FreeCAD format.

LifeTrac Construction Set Primitive Modules. These modules are parts that go into a tractor, and can be used to build various other related heavy machines.

Stable version of the Structural Power Cube from 2015 - Power Cube v15.6. See Power Cube Genealogy for all prior versions.
Stock Tubing. Hole size is 1-1/8", and 1/4" and 1/2" wall thickness is used.
Stock Bonding Plate, 2013.
Stock Pivot Plate, 1/2" steel.
Modular Wheel Unit, 2012.
Frame Module, LifeTrac 6, 2013. This is an example of a typical frame that can be built from our stock tubing. See LifeTrac 6 for details
Backhoe prototype 1. It was built as a front attachment for LifeTrac 1, and side to side motion was obtained via articulation of the tractor.