Filament path
Filament enters the Nebula-style path, passes the main sensing area, and moves through the dual gear drive.
CN3D Nebula Extruder Upgrade
How NebulaTor Works
See how the filament path, sensing, drive system, and cutter work together inside NebulaTor.
Docs livePublic project reveal and documentation
STL nextPrintable files planned after validation
CAD laterCAD/STEP planned after final validation
KlipperDevelopment firmware logic documented
Watch NebulaTor in Action
This development video shows an early NebulaTor prototype operating and demonstrates the project in real use.
System Operation
NebulaTor works as a complete extruder upgrade around the original Nebula platform: filament enters the drive path, sensing gives more information about where filament is, the gear stage drives the filament, and the cutter system is integrated into the modified body.
Operation Sequence
Sensing
The stock sensor position remains and the project adds a sensing point after the gears to improve path awareness.
Drive mechanism
The manual documents a dual gear drive, rotation distance 51.75, and gear ratio 11.25:1.
Gear area
Internal mechanical updates include improved gear meshing in the latest CAD revision.
Cutter system
An Olfa blade cutter is integrated into the modified extruder body for controlled filament cutting.
Switches and electronics
The development configuration references sensor/button logic and a PCB with support for the added sensing path. Final release status remains pending.