This is a printable parametric Castor Wheel. It is formed by two parts that must be printed independently: support and wheel. The wheels is supposed to have an O-Ring to track well. This Object has been designed with http://iearobotics.com/oomlwiki/ - OOML (The C++ Object Oriented Mechanics Library) version 0.45. The OOML is a set of tools written in C++ that allow designers to create mechanical parts using the C++ language. OOML applies the model of Object Oriented Programming to Mechanical Designs. Parts can be inherited from others. A part can join together other existing parts, and so forth. It generates OpenSCAD code that can be modified and used to generate the STL files. To use it you must uncompress the zip file attached and compile. In linux the steps are: Once it is compiled (it has no external dependencies) just run the castorwheel program: