Extruder for Geared stepper motor 1:50 with Ceramic Hotend Chess from 2engineers

Extruder for the motor and Hotend from http://www.2engineers.com/
I have printed the thing! Everything fits and looks good.
I've uploaded an alternative part for the hotend, the hole is larger and the Hotend fits better into it.
I tried to get the ceramic-hotend to run, but the ABS (3mm) glued on it!
I have received a feedback from Edwyn:
"Put a piece of ptfe btween the nozzle and ceramic part."
I'll try it when I have time again.