Semi flexible TPE bowden extruder modification

Printing with TPE on a bowden is said to be impossible. Not anymore: The modification to the compact bowden extruder allows the rubber filament to be forced into the feeding hole without allowing it to twist out of the feed. The filament I used was hardnes 45D and is called semi flexible TPE rubber 1,7mm thickness.

After printing the part you need to drill the feeding hole open with a 1,5mm or 2mm dril. This hole where the filament is feeded into needs to be smooth and must be perfectly alig