Inspired by the two-colour horn by KingRahl, I recreated the model in OpenSCAD and while at it, made the number of colours parametric (as well as a number of other parameters).
NB! This object is not customizable as it uses features from the 2013.06 release of OpenSCAD and Customizer doesn't yet support that.
Versioned source: https://github.com/kintel/OpenSCAD-models
This object was designed to exercise the 5-colour 3D printer from ORD solutions (http://www.ordsolutions.com/product_p/3dpmh3000.htm).
To print this object you need a multi-colour 3D printer.
- Export STL files using the horn.sh script
- In Slic3r: Combine multi-material STL files and save as AMF
- The resulting AMF file can be sliced in Slic3r, given that you have a config file with 5 extruders
Naturally, the OpenSCAD design can be parametrized for another number of colours, but that's not well tested yet.