Summary This is a parametric openscad snap fit -- completely customizable. Open in Customizer to make a simple snap fit column -- If you need it in another shape open the self-explantory OpenSCAD code and apply snaps to your objects. Print on your favorite RepRap FFF machine. Adjust tolerances to your individual printer to get the type of fit your want. This component is part of an open source lab library, by the Michigan Tech's Open Sustainability Technology Research Group. For similar see the Open-Source Lab How to Build Your Own Hardware and Reduce Research Costs