February 9, 2025
Description
Requires x3 M3x40 screws, x1 M3x6, x1 M3 heat set insert.
The best blades I have found, they have lasted thousands of cuts so far:
Print in ABS/ASA at least 8 walls, 40% infill
Below are my Happy Hare CUT TIP Macro details, the depressor position should work on all Troodons 2.0 350MM using the same filametrix as me linked below, customize the rest of the settings to your hotend and liking.
I used the below filametrix parts:
G2E-Filametrix/Extruder and Cutter Parts/Twinsor/STL at main · IRTrail/G2E-Filametrix · GitHub
Version 1:
Chase# CUT_TIP -----------------------------------------------------------------
# ██████╗██╗ ██╗████████╗ ████████╗██╗██████╗
# ██╔════╝██║ ██║╚══██╔══╝ ╚══██╔══╝██║██╔══██╗
# ██║ ██║ ██║ ██║ ██║ ██║██████╔╝
# ██║ ██║ ██║ ██║ ██║ ██║██╔═══╝
# ╚██████╗╚██████╔╝ ██║ ██║ ██║██║
# ╚═════╝ ╚═════╝ ╚═╝ ╚═╝ ╚═╝╚═╝
# Don't need to configure if using tip forming
# (base/mmu_cut_tip.cfg)
#
[gcode_macro _MMU_CUT_TIP_VARS]
description: Happy Hare toolhead tip cutting macro configuration variables
gcode: # Leave empty
# Whether the toolhead tip cutting macro will return toolhead to initial position
# after the cut is complete. If using parking logic it is better to disable this
variable_restore_position : False; True = return to initial position, False = don't return
# Distance from the internal nozzle tip to the cutting blade. This dimension
# is based on your toolhead and should not be used for tuning
# Note: If you have a toolhead sensor this variable can be automatically determined!
# Read https://github.com/moggieuk/Happy-Hare/wiki/Blobing-and-Stringing
variable_blade_pos : 55; TUNE ME: Distance in mm from internal nozzle tip
# Distance to retract prior to making the cut, measured from the internal nozzle
# tip. This reduces wasted filament (left behind in extruder) but might cause a
# clog if set too large. This must be less than 'blade_pos'
# Note: the residual filament left in nozzle ('toolhead_ooze_reduction') is
# subtracted from this value so make sure toolhead is calibrated
variable_retract_length : 30; TUNE ME: 5mm less than 'blade_pos' is a good starting point
# Whether to perform a simple tip forming move after the initial retraction
# Enabling this adds gives some additional cooling time of molten filament and
# may help avoid potential clogging on some hotends
variable_simple_tip_forming : False; True = Perform simple tip forming, False = skip
# This should be the position of the toolhead where the cutter arm just
# lightly touches the depressor pin
variable_cutting_axis: "x"; "x" or "y". Determines cut direction (axis) during cut motion
variable_pin_loc_xy : 14,350; x,y coordinates of depressor pin
# This distance is added to "pin_loc_x" or "pin_loc_y" depending on the 'cutting_axis'
# to determine the starting position and to create a small safety distance that aids
# in generating momentum
variable_pin_park_dist : 5.0; Distance in mm
# Position of the toolhead when the cutter is fully compressed. This value is on the x or y axis depending on the value of
# 'cutting_axis'. Should leave a small headroom (should be a bit larger than 0, or whatever xmin is) to
# avoid banging the toolhead or gantry
variable_pin_loc_compressed : 2; Distance. Coordinate in x or y direction depending on 'cutting_axis'
# Retract length and speed after the cut so that the cutter blade doesn't
# get stuck on return to origin position
variable_rip_length : 1.0; Distance in mm to retract to aid lever decompression (>= 0)
variable_rip_speed : 5; Speed mm/s
# Pushback of the remaining tip from the cold end into the hotend. This does
# not have to push back all the way, just sufficient to ensure filament fragment
# stays in hot end and the "nail head" of the cut is pushed back past the
# PTFE/metal junction so it cannot cause clogging problems on future loads.
# Cannot be larger than 'retract_length' - toolhead_ooze_reduction
variable_pushback_length : 15.0; TUNE ME: PTFE tube length + 3mm is good starting point
variable_pushback_dwell_time : 0; Time in ms to dwell after the pushback
# Speed related settings for tip cutting
# Note that if the cut speed is too fast, the steppers can lose steps.
# Therefore, for a cut:
# - We first make a fast move to accumulate some momentum and get the cut
# blade to the initial contact with the filament
# - We then make a slow move for the actual cut to happen
variable_travel_speed : 150; Speed mm/s
variable_cut_fast_move_speed : 40; Speed mm/s
variable_cut_slow_move_speed : 2; Speed mm/s
variable_evacuate_speed : 150; Speed mm/s
variable_cut_dwell_time : 50; Time in ms to dwell at the cut point
variable_cut_fast_move_fraction : 1.0; Fraction of the move that uses fast move
variable_extruder_move_speed : 25; Speed mm/s for all extruder movement
Version 2:
# CUT_TIP -----------------------------------------------------------------
# ██████╗██╗ ██╗████████╗ ████████╗██╗██████╗
# ██╔════╝██║ ██║╚══██╔══╝ ╚══██╔══╝██║██╔══██╗
# ██║ ██║ ██║ ██║ ██║ ██║██████╔╝
# ██║ ██║ ██║ ██║ ██║ ██║██╔═══╝
# ╚██████╗╚██████╔╝ ██║ ██║ ██║██║
# ╚═════╝ ╚═════╝ ╚═╝ ╚═╝ ╚═╝╚═╝
# Don't need to configure if using tip forming
# (base/mmu_cut_tip.cfg)
#
[gcode_macro _MMU_CUT_TIP_VARS]
description: Happy Hare toolhead tip cutting macro configuration variables
gcode: # Leave empty
# Whether the toolhead tip cutting macro will return toolhead to initial position
# after the cut is complete. If using parking logic it is better to disable this
variable_restore_position : False; True = return to initial position, False = don't return
# Distance from the internal nozzle tip to the cutting blade. This dimension
# is based on your toolhead and should not be used for tuning
# Note: If you have a toolhead sensor this variable can be automatically determined!
# Read https://github.com/moggieuk/Happy-Hare/wiki/Blobing-and-Stringing
variable_blade_pos : 55; TUNE ME: Distance in mm from internal nozzle tip
# Distance to retract prior to making the cut, measured from the internal nozzle
# tip. This reduces wasted filament (left behind in extruder) but might cause a
# clog if set too large. This must be less than 'blade_pos'
# Note: the residual filament left in nozzle ('toolhead_ooze_reduction') is
# subtracted from this value so make sure toolhead is calibrated
variable_retract_length : 30; TUNE ME: 5mm less than 'blade_pos' is a good starting point
# Whether to perform a simple tip forming move after the initial retraction
# Enabling this adds gives some additional cooling time of molten filament and
# may help avoid potential clogging on some hotends
variable_simple_tip_forming : False; True = Perform simple tip forming, False = skip
# This should be the position of the toolhead where the cutter arm just
# lightly touches the depressor pin
variable_cutting_axis: "x"; "x" or "y". Determines cut direction (axis) during cut motion
variable_pin_loc_xy : 17,350; x,y coordinates of depressor pin
# This distance is added to "pin_loc_x" or "pin_loc_y" depending on the 'cutting_axis'
# to determine the starting position and to create a small safety distance that aids
# in generating momentum
variable_pin_park_dist : 5.0; Distance in mm
# Position of the toolhead when the cutter is fully compressed. This value is on the x or y axis depending on the value of
# 'cutting_axis'. Should leave a small headroom (should be a bit larger than 0, or whatever xmin is) to
# avoid banging the toolhead or gantry
variable_pin_loc_compressed : 5; Distance. Coordinate in x or y direction depending on 'cutting_axis'
# Retract length and speed after the cut so that the cutter blade doesn't
# get stuck on return to origin position
variable_rip_length : 1.0; Distance in mm to retract to aid lever decompression (>= 0)
variable_rip_speed : 5; Speed mm/s
# Pushback of the remaining tip from the cold end into the hotend. This does
# not have to push back all the way, just sufficient to ensure filament fragment
# stays in hot end and the "nail head" of the cut is pushed back past the
# PTFE/metal junction so it cannot cause clogging problems on future loads.
# Cannot be larger than 'retract_length' - toolhead_ooze_reduction
variable_pushback_length : 15.0; TUNE ME: PTFE tube length + 3mm is good starting point
variable_pushback_dwell_time : 0; Time in ms to dwell after the pushback
# Speed related settings for tip cutting
# Note that if the cut speed is too fast, the steppers can lose steps.
# Therefore, for a cut:
# - We first make a fast move to accumulate some momentum and get the cut
# blade to the initial contact with the filament
# - We then make a slow move for the actual cut to happen
variable_travel_speed : 150; Speed mm/s
variable_cut_fast_move_speed : 40; Speed mm/s
variable_cut_slow_move_speed : 2; Speed mm/s
variable_evacuate_speed : 150; Speed mm/s
variable_cut_dwell_time : 50; Time in ms to dwell at the cut point
variable_cut_fast_move_fraction : 1.0; Fraction of the move that uses fast move
variable_extruder_move_speed : 25; Speed mm/s for all extruder movement
License:
Creative Commons — Public Domain
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