With this interchangable PTFE tube the Budaschnozzle 1.1 can print 1.75mm filament. Currently the Budaschnozzle is by default set to print 3mm filament. By changing out the inner PTFE tubing you can now print 1.75mm plastic filament.
You can see a video here showing how to change out the PTFE tube.
This PTFE tube is not compatible with the version 1.0 or 1.0.1 upgrade. This also includes the Budaschnozzle that is included with the current assembled printer design.
Specifications