Since I have a v2 Printrbot Simple, I decided to use the Airtripper Bowden Extruder instead of the Wades design specified:
[www.thingiverse.com]
It looks like it will work better with the direct-drive hardware the v2 PB Simple comes with.
[www.thingiverse.com]
It looks like it will work better with the direct-drive hardware the v2 PB Simple comes with.