Concept for a simple adjustable direct-drive extruder.
A ball bearing is mounted onto the fourth screw hole of the NEMA17 with a slightly non-concentric lever that enables pressure adjustment.
Two M5 nuts can be inserted for Bowden-Tube Push-Fit connectors.
A 4x2mm PTFE Tube may be inserted to guide the filament path.
The extension ring for the bearing may be printed with flexible/rubber filament.
The left part has to be printed twice. ;)
An additional frame can be used as spacer between the stepper motor and the extruder and to keep all four screws in place.
Remember to come back and post what you've printed as Make.
It's good for the designer and the community (that means you)!
To post a Make, come back to this Thing and click Post a Make.
Or, you can use the Thingiverse Mobile app found on
and the Apple App Store.