Hello everyone,

I’m running into a wall trying to get a Filametrix cutter running consistently on my franken-printer setup. I've spent about 5 hours tweaking it and could use some fresh eyes.

The Setup:

* Base Printer: Ender 3 V2 (using a physical strike block on the frame)

* Toolhead: Stealthburner with Galileo 2 (G2E)

* MMU: TradRack system

* Cutter: Filametrix

* X-Axis Motor: Upgraded to a 42-40 stepper

* Filiment: PLA

The Issue:

The X-axis stepper motor stalls or slips during the cutting stroke. It will occasionally complete 1 or 2 successful cuts, but then the blade refuses to push through, or the X stepper skips steps/grinds. I have swapped to a fresh blade and verified the filament path is clear.

Relevant Klipper Configs:

My [stepper_x] base run_current is: 0.85A

Here are the relevant macro settings I'm currently running:

variable_cut_axis_steppers : 'stepper_x'

variable_cut_stepper_current : 150

variable_cutting_axis : "x"

variable_pin_loc_xy : 5, 115

variable_pin_park_dist : 5.0

variable_pin_loc_compressed_xy : -1.4, 115

variable_travel_speed : 150

variable_cut_fast_move_speed : 65

variable_cut_slow_move_speed : 4

variable_cut_fast_move_fraction : 0.8

Has anyone run into X-axis stalling issues with the 42-40 motor on a Filametrix setup? Should I be looking at adjusting my fast move fraction/speeds for more momentum or modifying my setup?

Any advice would be highly appreciated!