Official Launch: July 15th - 10:00AM EST
Works With Most 3D Printing Setups
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Directly on 3D Printer
Even without a reloader/AMS, printers with a runout sensor will pause, giving you a chance to fix the problem and resume the print.
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With Automatic Reload System
Bent ends and tangles can jam the S1 and stop your print. The cutter stops that before it happens by cutting off the bad part automatically.
No Sensors. No Wiring. Just Physics
1. Filament enters the cutter’s tube
2. Bent ends or tangles gets caught in the inlet tube.
3. The tension pulls it down, cutting off the bad end.
4. The S1 reloads the next spool and keeps your print running.
New Features Since Beta Launch
Spring-Assisted Cutting Blade
Ensures clean, consistent cuts every time.
- Requires 3X less force to complete each cut
- Prevents grinding/skipping gears/extruder
- Easy to reset after each cut
Two Sensitivity Options
Choose the option that is most reliable with your setup.
High Sensitivity (level 1): Makes it easier to trigger a cut — ideal for extruders that previously struggled to finish cuts.
Low Sensitivity (level 2): Helps prevent accidental cuts or false triggers in high-tension systems.
Designed to be Universal
Compatible with a wide range of 3D printing systems that use 1.75 mm filament, including:
- Automatic Filament Re-loaders (like the S1)
- Direct-to-extruder Setups
- Many AMS/MMU style units