EfE --- Easy feed Extruder

Here is my new Easy feed Extruder. The goal of the design is to change filament quickly. At the moment I'm doing my first tests with it. So there will change some details in the next days. As axis for the filament transport I use an 55 mm long M5 threaded rod with a modified M5 expansion anchor, which is fixed with two M5 Nuts. There are 3 ball bearings 5-625 inside. Two for the axis and one to press against the filament. When it is running fine I start to develop an automatic filament changer f