Extruder for the Ultimaker Original that allows printing with flexible filament.
Removing the bowden tube and putting the extruder directly on the head.
This is not just for fun, but to make printing of flexible filament possible (Filaflex, Ninjaflex for example but it can apply to any filaments that don't like long bowdens).
Still a WIP, but it is functional. Printing at 25mm/min gives good results. Faster than that makes the heavy head a bit shaky and degrades print quality.
It is derived from the famous "Greg's-Wade's-Taylor's-Someone's extruder" and uses the original stepper from the Ultimaker.
The whole thing is mounted on top of the moving head and does not need to disconnect the sensor or the heater. I still haven't found a place to mount the small ADC board so I leave it hanging from its wires at the moment.
See it working:
The files are here: