About this 3D model

This is an improved hot-end platform for the [3DR Simple](https://github.com/JohnSL/3DR-Simple-Delta-Printer#3dr-simple-delta-printer) 3D printer. Features: * Modeled entirely in OpenSCAD. * Captive bolts to make tightening easier. * Compatible with parts designed for the original 3DR micro platform, including fans. * Compatible with parts designed for the 3DR Simple micro platform, which has a different bolt arrangement. * Low-profile height (8mm) * Optional integrated mount for an [inductive bed sensor](http://www.amazon.com/Cylindrical-Inductive-Proximity-Approach-LJ12A3-4-Z/dp/B007Q813UA/ref=sr_1_1). Works great with [this E3D mount](http://www.thingiverse.com/thing:285405).