From GitHub:

FilamATrix is a Stealthburner toolhead filament cutting mod created specifically for the ArmoredTurtle BoxTurtleproject. It is an adaptation and cleanup of the Filametrix and G2E-Filametrix mods. Note the slightly different spelling change - all other documentation within this repository refer to this specific modification.

However, use of BoxTurtle/AFC are not required - this mod can be used anywhere the upstream Filametrix/G2E-Filametrix are).

FilamATrix modifies the VORON Design StealthBurner hotend and Clockwork 2 Extruder or Galileo 2 Extruder to support a kinematic-actuated cutting blade for cleaner, more reliable automated filament changes that also eliminates the need for tip forming.

FilamATrix consolidates the CAD for Filametrix and G2E-Filametrix into a single file and provides a reorganized repository with a clear structure of what files are needed to print. While both extruders are provided as an option, our recommendation is to use Clockwork 2 - we find users have had the most success with it. The assembly instructions and manual only cover Clockwork 2.

Clockwork 2 supports two toolhead sensors, but some users may only be able to support one due to limited GPIO on the toolhead, so our default recommendation is just the pre-extruder sensor.

The print files for FilamATrix have been modified from the original projects with the following changes:

• Hotend mounts/Printheads now use M3 threaded heat insert (instead of a M3 nut) for simpler installation and maintenance. Many thanks to hartk for this idea!
  

• On Clockwork 2, there is an increased depth for the PTFE tubing to better help guide the filament towards the extruder gears and make insertion less position dependent.
  

• Cutting arm has been modified to support a full length M2.5x16 FHCS.

• Inclusion of the Beefy Depressor mount as the default.

The following hotends are natively supported on this repository:

• Revo Voron
• Dragon HF
• Dragon UHF
• Dragon UHF mini
• Rapido HF v1/v2
• Rapido UHF v1/v2
• Bambulab X1C