Filament Runout Sensor Enclosure (Micro-Switch)

This is filament sensor enclosure. The filament sensor use a PTFE tube to guide the filament. A cut in the PTFE tube expose the filament to a micro-switch with ball bearing. This should keep the friction to the filament to minimum even during retraction.

This is thought to be mounted on a BMG extruder with the PTFE tube going in the PTFE coupling. The sensor is light enough to not cause any trouble.

2nd version: switched to OpenSCAD and added the source. Added a blocker for the PTFE tube so it does not slide out of the box.

Print Settings

Printer Brand:

Creality

Printer:

Ender 3

Rafts:

No

Supports:

No

Resolution:

0.2

Infill:

10%

Filament:
Das Filament PLA Black

Notes:

Current version: Recreated the original using OpenSCAD and adapted to hold the PTFE tube and a JST XH connectors. The cover also have a small blocker to prevent the PTFE tube from sliding out.

Old version: I modified the original STL using FreeCAD so it can hold a PTFE tube and a JST XH connectors.

Category: 3D Printer Accessories