Customizable Endstop Extender

You probably came here because your Z-Endstop screw is too short.

While there are a couple of endstop extenders on Thingiverse, most of them are designed for just one printer model or at least define a certain screw diameter.

This model is more generic. Use the Customizer in Thingiverse or download the model and customize it with the latest version of OpenSCAD (as of July 2018 the development version even features a built-in customizer - just in case the Thingiverse customizer is broken).