Filament guide for Sanjiu / SANBrother Metal BMG extruder

Customizable in OpenSCAD

3D printer parts and enhancements


A permissive Free Software license that lets this work be widely shared with few restrictions.

Learn more or download attribution tags


"v4" (blue part in the pictures) was already much tighter, than the (black) stock piece. But it was still not tight enough to print flexibles properly.
The "v5" (depicted in copper) should tackle that now.

More on the extruder:

Materials and methods

My specimen was printed with a 0.3mm nozzle and 0.35mm line width.
You'll need a drill bit for post processing.
> 1.8mm, because the drill will elastically widen the plastic while drilling.
And a sharp knife/scalpel of course.



Issues are used to track todos, bugs or requests. To get started, you could create an issue.


465727266d141903a2b4930cecf4ad58?default=blank&size=40Burning Becks published this design ago