Manual filament cutter

This guide explains how to integrate a filament cutter with the 3MS system, allowing automatic cutting during the filament swap. This negates the need for tip shaping, makinng color swaps much faster and more reliable.

Table of Contents

• Installation
• Configuration
• Using Cutter Macros
• Troubleshooting

Installation

To install the filament cutter, update your 3ms/main.cfg:

[save_variables]
filename: ~/printer_data/config/3ms/variables.cfg

[include ./settings.cfg]
[include ./endless/settings.cfg]
[include ./cutter/settings.cfg]
[include ./controllers/btt_skr_mini_e3_v2/steppers.cfg]

[dynamicmacros 3ms]
configs: 3ms/macros.cfg, 3ms/endless/macros.cfg, 3ms/cutter/macros.cfg

---

Configuration

Cutter Settings

Edit your 3ms/cutter/settings.cfg:

Variable	Example Value	Description
parking_x_position	280 mm	X parking position (near compress pin)
parking_y_position	-1 mm	Y parking position (near compress pin)
start_x_cutter_position	285 mm	X start position for cutting
end_x_cutter_position	310 mm	X position when blade is pushed
start_y_cutter_position	-1 mm	Y start position for cutting
end_y_cutter_position	-1 mm	Y position when blade is pushed
travel_speed	6000 mm/min	Speed to move to cutting position
pushing_speed	1600 mm/min	Speed to push the blade
retries	2	Number of repetions

Note

If X or Y is set to -1, it indicates that the toolhead moves along one axis to reach the parking position. The printer will adjust movement accordingly. If both axes are used, define both positions.

Modifying Settings

To change values temporarily, use the SET_CUTTER_SETTINGS macro. this can be usefull during troubleshooting and testing

SET_CUTTER_SETTINGS PARKING_X=290 PUSHING_SPEED=1700

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