Printrbot - Direct Drive to Bowden Extruder Adapter

I plan to use a Printrbot direct drive extruder (Aluminum or their new printed/geared version) on a Mini Kossel. This is a dummy part to allow fitment of a push-tube adapter in place of a Ubis hot end.

The OpenSCAD file is included, should you need to customize something.

The picture shows installation on a Printrbot geared direct drive extruder.