FreeCAD Great-Rhombicuboctahedron

There are a bunch of workflows you could use to create this design. This is just one of them as an exercise to learn FreeCAD. The 3 bodies are internal and are defined by a spreadsheet making it parametric.

You may also be interested in my other Voron Trident mods shown here or at https://www.printables.com/@JimChristian_3198049  &  https://www.printables.com/@JimChristian_3198049/models  They work well  :-)

Also, if you find value in this, please give it a like. Thanks.

The FreeCAD files are included. They were created using FreeCAD git sources I compiled yesterday.

OS: Debian GNU/Linux 13 (trixie) (X-Generic/xwayland)

Architecture: x86_64

Version: 1.2.0dev.44888 (Git)

Build date: 2026/01/05 21:59:05

Build type: Unknown

Branch: main

Hash: ede7013f55872bd631d268ded826518b19d616de

Python 3.11.13, Qt 6.8.3, Coin 4.0.3, Vtk 9.3.1, boost 1_86, Eigen3 3.4.0, PySide 6.8.3

shiboken 6.8.3, xerces-c 3.3.0, IfcOpenShell 0.8.2, OCC 7.8.1

Locale: English/United States (en_US)

Navigation Style/Orbit Style/Rotation Mode: Blender/Rounded Arcball/Window center

Stylesheet/Theme/QtStyle: Darker.qss/Darker/

Logical DPI/Physical DPI/Pixel Ratio: 96/96.237/1.25

Installed mods:

* OpenTheme 2025.5.20

* ProDarkThemePreferencePack 1.0.0

* freecad.gears 1.3.0

* FreeCAD-themes 2025.6.4