This is with double walls and support speed set to 75 from original 120 mm/s.

Typically no other issues in my prints, just this very annoying blocker - any ideas?

I am a bit new here and trying to solve my first bigger looking issue of my CoreOne+ printer. I have downloaded an stl plan and sliced it with the PrusaSlicer 2.9.4 under linux. I have edited the PETG material to have the temperature that was given by the manufacturer of material (230-250 nozzle -> 240, and 70-80 bed -> 70). I have also changed some default settings like use support and use the organic type but have not edited any "expert" values - like retract speed or distance etc.

The slicer gave me screen where the end-result looked OK for me, so I have saved the gcode to USB and started printing. Since, it took longer than 1h, I went for my daily walk... When I was back I have noticed that the end-result looked quite different. There are several layers where there is an added slope or hole that was not on the screen on the slicer. My question is, who can help to "debug" the created gcode file? When I load again to the Slicer it still looks normal, so I guess the generation is perhaps buggy??? 

(BTW: The Pruse help page for the slicer gave me 404 -> https://help.prusa3d.com/product/prusaslicer - Does anybody know how to contact them?)

Please see added some pictures about the slicer screen as well as the printed out result + the code zipped.

I'm currently experiencing a very strange problem with Prusaslicer.
Last week, I prepared a box to print on my PrusaXL. I added a pause during print to add some nuts.
There was no problem with that.

Today, I tried to do the same with another version of this box. When I go to the proper layer and right clic on the "add pause" button, I validate the default pause message. But the pause indicator (the cross right to the layer) d'ont appear anymore. Even after regenerating the G-code.

I tried to re-install PrusaSlicer but the problem is still here.

Thank you.

I am having issue with Prusa XL with 5 Toolheads. When the printer is turned on, it resets during the loading and throws and error "USB Port Overcurrent #17306". This has been happening for quite some time now and I am waiting on update from Prusa Support.

This issue first occured shortly after a ruined print covered one of the toolheads in blob of filament. While cleaning the mess, the thermistor of the toolhead got damaged and it was replaced. But I am not sure if this is relevant to the issue.

What I have tried so far:

• Turn printer on with disconnected toolhead where thermistor was replaced.
• Turn printer on with all toolheads disconnected
• Swapping display from Core One L and MK4s - Still same error when powered on
• Testing display from XL on Core One L and MK4s - Display works as expected.
• Using different USB drives, powering on with and without USB drive connected.
• Bought and replaced LCD cable and Sandwich board (based on suggestion from 24/7 live chat support).

None of these fixes worked and the issue still persists. I am currently waiting on reply from the Prusa Support and will be trying another live chat support session soon. I have not found any damaged cable or components.

I will be glad for any suggestions on how to resolve this issue.

Thanks!

Happy Printing

I have installed the firmware:

• MK4_MK4S_MK3.9_MK3.9S_firmware_6.5.3.bbf
• with the MMU3_FW3.0.4+936.hex

(Downloaded in the offical PRISMA Firmware and Download section)

My Printer is an MK4S with MMU3, but after this Firmware update, my printer says, that the MMU3 is not compatible with the Firmware 6.5.3I did a hard firmware reset, problem still occures.

After that, I have installed the Firmware:

• MK4_MK4S_MK3.9_MK3.9S_firmware_6.4.0.bbf
• MMU3_FW3.0.3+896.hex

This works for me.

But, next day, it says: to much power onthe MMU :(
I did a hard reset again, with the 6.4.0.bbf and 896.hex - and works again.. maybe for more than one day.

I also checked all cables, but all seems fine.

Is there an older firmware version, I could download and use for my MK4S with MMU3?Just got lost in the GitHub Repo.

Thank you in advance!

Best regards,
David

Thanks.

mein Prusa Mini+ druckt ab der 4. Schicht nicht mehr richtig. Irgendwie fehlt die Haftung auf der 3. Schicht.

Hatte jemand schon mal das Problem? Kann mir einer helfen?

Gedruckt mit PLA (egal welcher Hersteller) mit, oder ohne Input Shaper, immer das gleiche Problem.

Firmware 6.4.0+11974

# generated by PrusaSlicer 2.9.4 on 2026-05-05 at 18:42:55 UTC
arc_fitting = emit_center
autoemit_temperature_commands = 1
automatic_extrusion_widths = 0
automatic_infill_combination = 0
automatic_infill_combination_max_layer_height = 100%
avoid_crossing_curled_overhangs = 0
avoid_crossing_perimeters = 0
avoid_crossing_perimeters_max_detour = 0
bed_custom_model = 
bed_custom_texture = 
bed_shape = 0x0,180x0,180x180,0x180
bed_temperature = 60
bed_temperature_extruder = 0
before_layer_gcode = ;BEFORE_LAYER_CHANGE\nG92 E0.0\n;\n\n
between_objects_gcode = 
binary_gcode = 1
bottom_fill_pattern = monotonic
bottom_solid_layers = 4
bottom_solid_min_thickness = 0.5
bridge_acceleration = 1000
bridge_angle = 0
bridge_fan_speed = 100
bridge_flow_ratio = 0.95
bridge_speed = 25
brim_separation = 0.1
brim_type = outer_only
brim_width = 0
chamber_minimal_temperature = 0
chamber_temperature = 0
color_change_gcode = M600
colorprint_heights = 
compatible_printers_condition_cummulative = "printer_notes=~/.*PRINTER_VENDOR_PRUSA3D.*/ and printer_model==\"MINI\" and nozzle_diameter==0.4";"nozzle_diameter!=0.8 and printer_notes!~/.*PG.*/ and printer_notes!~/.*MINIIS.*/ and printer_model!=\"MK3.5\" and ! (printer_notes=~/.*PRINTER_VENDOR_PRUSA3D.*/ and printer_notes=~/.*PRINTER_MODEL_MK(2.5|3).*/ and single_extruder_multi_material)"
complete_objects = 0
cooling = 1
cooling_perimeter_transition_distance = 0
cooling_slowdown_logic = uniform_cooling
cooling_tube_length = 5
cooling_tube_retraction = 91.5
custom_parameters_filament = ""
custom_parameters_print = 
custom_parameters_printer = 
default_acceleration = 1000
default_filament_profile = "Prusament PLA"
default_print_profile = 0.15mm QUALITY @MINI
deretract_speed = 40
disable_fan_first_layers = 1
dont_support_bridges = 0
draft_shield = disabled
duplicate_distance = 6
elefant_foot_compensation = 0.2
enable_dynamic_fan_speeds = 0
enable_dynamic_overhang_speeds = 1
end_filament_gcode = "; Filament-specific end gcode"
end_gcode = G1 E-1 F2100 ; retract\n{if layer_z < max_print_height}G1 Z{z_offset+min(max_layer_z+2, max_print_height)} F720 ; Move print head up{endif}\nG1 X178 Y178 F4200 ; park print head\n{if layer_z < max_print_height}G1 Z{z_offset+min(max_layer_z+30, max_print_height)} F720 ; Move print head further up{endif}\nG4 ; wait\nM104 S0 ; turn off temperature\nM140 S0 ; turn off heatbed\nM107 ; turn off fan\nM221 S100 ; reset flow\nM900 K0 ; reset LA\nM84 ; disable motors\n; max_layer_z = 
ensure_vertical_shell_thickness = enabled
external_perimeter_acceleration = 800
external_perimeter_extrusion_width = 0.45
external_perimeter_speed = 40
external_perimeters_first = 0
extra_loading_move = -2
extra_perimeters = 0
extra_perimeters_on_overhangs = 0
extruder_clearance_height = 20
extruder_clearance_radius = 35
extruder_colour = ""
extruder_offset = 0x0
extrusion_axis = E
extrusion_multiplier = 1
extrusion_width = 0.45
fan_always_on = 1
fan_below_layer_time = 100
filament_abrasive = 0
filament_colour = #FF8000
filament_cooling_final_speed = 3.4
filament_cooling_initial_speed = 2.2
filament_cooling_moves = 4
filament_cost = 27.99
filament_density = 1.24
filament_deretract_speed = nil
filament_diameter = 1.75
filament_infill_max_crossing_speed = 0
filament_infill_max_speed = 0
filament_load_time = 0
filament_loading_speed = 28
filament_loading_speed_start = 3
filament_max_volumetric_speed = 15
filament_minimal_purge_on_wipe_tower = 15
filament_multitool_ramming = 0
filament_multitool_ramming_flow = 10
filament_multitool_ramming_volume = 10
filament_notes = ""
filament_purge_multiplier = 100%
filament_ramming_parameters = "120 100 6.6 6.8 7.2 7.6 7.9 8.2 8.7 9.4 9.9 10.0| 0.05 6.6 0.45 6.8 0.95 7.8 1.45 8.3 1.95 9.7 2.45 10 2.95 7.6 3.45 7.6 3.95 7.6 4.45 7.6 4.95 7.6"
filament_retract_before_travel = nil
filament_retract_before_wipe = nil
filament_retract_layer_change = nil
filament_retract_length = nil
filament_retract_length_toolchange = nil
filament_retract_lift = nil
filament_retract_lift_above = nil
filament_retract_lift_below = nil
filament_retract_restart_extra = nil
filament_retract_restart_extra_toolchange = nil
filament_retract_speed = nil
filament_seam_gap_distance = nil
filament_settings_id = "Prusament PLA"
filament_shrinkage_compensation_xy = 0%
filament_shrinkage_compensation_z = 0%
filament_soluble = 0
filament_spool_weight = 278
filament_stamping_distance = 0
filament_stamping_loading_speed = 20
filament_toolchange_delay = 0
filament_travel_lift_before_obstacle = nil
filament_travel_max_lift = nil
filament_travel_ramping_lift = nil
filament_travel_slope = nil
filament_type = PLA
filament_unload_time = 0
filament_unloading_speed = 90
filament_unloading_speed_start = 100
filament_vendor = Prusa Polymers
filament_wipe = nil
fill_angle = 45
fill_density = 15%
fill_pattern = grid
first_layer_acceleration = 600
first_layer_acceleration_over_raft = 0
first_layer_bed_temperature = 60
first_layer_extrusion_width = 0.42
first_layer_height = 0.2
first_layer_infill_speed = 0
first_layer_speed = 20
first_layer_speed_over_raft = 30
first_layer_temperature = 215
full_fan_speed_layer = 4
fuzzy_skin = none
fuzzy_skin_point_dist = 0.8
fuzzy_skin_thickness = 0.3
gap_fill_enabled = 1
gap_fill_speed = 40
gcode_comments = 0
gcode_flavor = marlin2
gcode_label_objects = firmware
gcode_resolution = 0.0125
gcode_substitutions = 
high_current_on_filament_swap = 0
host_type = prusalink
idle_temperature = nil
infill_acceleration = 1500
infill_anchor = 2.5
infill_anchor_max = 12
infill_every_layers = 1
infill_extruder = 1
infill_extrusion_width = 0.45
infill_first = 0
infill_overlap = 15%
infill_speed = 140
interface_shells = 0
interlocking_beam = 0
interlocking_beam_layer_count = 2
interlocking_beam_width = 0.8
interlocking_boundary_avoidance = 2
interlocking_depth = 2
interlocking_orientation = 22.5
ironing = 0
ironing_flowrate = 15%
ironing_spacing = 0.1
ironing_speed = 15
ironing_type = top
layer_gcode = ;AFTER_LAYER_CHANGE\n;
layer_height = 0.2
machine_limits_usage = emit_to_gcode
machine_max_acceleration_e = 5000,5000
machine_max_acceleration_extruding = 2000,2000
machine_max_acceleration_retracting = 1250,1250
machine_max_acceleration_travel = 2500,2500
machine_max_acceleration_x = 2500,2500
machine_max_acceleration_y = 2500,2500
machine_max_acceleration_z = 400,400
machine_max_feedrate_e = 80,80
machine_max_feedrate_x = 180,180
machine_max_feedrate_y = 180,180
machine_max_feedrate_z = 12,12
machine_max_jerk_e = 10,10
machine_max_jerk_x = 8,8
machine_max_jerk_y = 8,8
machine_max_jerk_z = 2,2
machine_max_junction_deviation = 0,0
machine_min_extruding_rate = 0
machine_min_travel_rate = 0
max_fan_speed = 100
max_layer_height = 0.25
max_print_height = 180
max_print_speed = 150
max_volumetric_extrusion_rate_slope_negative = 0
max_volumetric_extrusion_rate_slope_positive = 0
max_volumetric_speed = 0
min_bead_width = 85%
min_fan_speed = 100
min_feature_size = 25%
min_layer_height = 0.07
min_print_speed = 15
min_skirt_length = 4
mmu_segmented_region_interlocking_depth = 0
mmu_segmented_region_max_width = 0
multimaterial_purging = 140
notes = 
nozzle_diameter = 0.4
nozzle_high_flow = 0
only_one_perimeter_first_layer = 0
only_retract_when_crossing_perimeters = 0
ooze_prevention = 0
output_filename_format = {input_filename_base}_0.4n_{layer_height}mm_{printing_filament_types}_{printer_model}_{print_time}.gcode
over_bridge_speed = 0
overhang_fan_speed_0 = 0
overhang_fan_speed_1 = 0
overhang_fan_speed_2 = 0
overhang_fan_speed_3 = 0
overhang_speed_0 = 15
overhang_speed_1 = 15
overhang_speed_2 = 20
overhang_speed_3 = 25
overhangs = 1
parking_pos_retraction = 92
pause_print_gcode = M601
perimeter_acceleration = 1000
perimeter_extruder = 1
perimeter_extrusion_width = 0.45
perimeter_generator = arachne
perimeter_speed = 50
perimeters = 2
physical_printer_settings_id = 
post_process = 
prefer_clockwise_movements = 0
print_host = 
print_settings_id = 0.20mm SPEED @MINI
printer_model = MINI
printer_notes = Don't remove the following keywords! These keywords are used in the "compatible printer" condition of the print and filament profiles to link the particular print and filament profiles to this printer profile.\nPRINTER_VENDOR_PRUSA3D\nPRINTER_MODEL_MINI\n
printer_settings_id = Original Prusa MINI & MINI+
printer_technology = FFF
printer_variant = 0.4
printer_vendor = 
printhost_apikey = 
printhost_cafile = 
raft_contact_distance = 0.2
raft_expansion = 1.5
raft_first_layer_density = 90%
raft_first_layer_expansion = 3
raft_layers = 0
remaining_times = 1
resolution = 0
retract_before_travel = 1.5
retract_before_wipe = 70%
retract_layer_change = 1
retract_length = 3.2
retract_length_toolchange = 4
retract_lift = 0.2
retract_lift_above = 0
retract_lift_below = 179
retract_restart_extra = 0
retract_restart_extra_toolchange = 0
retract_speed = 70
scarf_seam_entire_loop = 0
scarf_seam_length = 20
scarf_seam_max_segment_length = 1
scarf_seam_on_inner_perimeters = 0
scarf_seam_only_on_smooth = 1
scarf_seam_placement = nowhere
scarf_seam_start_height = 0%
seam_gap_distance = 15%
seam_position = aligned
silent_mode = 1
single_extruder_multi_material = 0
single_extruder_multi_material_priming = 1
skirt_distance = 2
skirt_height = 3
skirts = 1
slice_closing_radius = 0.049
slicing_mode = regular
slowdown_below_layer_time = 12
small_perimeter_speed = 25
solid_infill_acceleration = 1500
solid_infill_below_area = 0
solid_infill_every_layers = 0
solid_infill_extruder = 1
solid_infill_extrusion_width = 0.45
solid_infill_speed = 140
spiral_vase = 0
staggered_inner_seams = 0
standby_temperature_delta = -5
start_filament_gcode = "{if printer_notes!~/.*(MK3.5|MINIIS).*/}\nM900 K{if printer_notes=~/.*PRINTER_MODEL_MINI.*/ and nozzle_diameter==0.6}0.12{elsif printer_notes=~/.*PRINTER_MODEL_MINI.*/ and nozzle_diameter==0.8}0.06{elsif printer_notes=~/.*PRINTER_MODEL_MINI.*/}0.2{elsif nozzle_diameter==0.8}0.01{elsif nozzle_diameter==0.6}0.04{else}0.05{endif} ; Filament gcode LA 1.5\n{if printer_notes=~/.*PRINTER_MODEL_MINI.*/};{elsif printer_notes=~/.*PRINTER_HAS_BOWDEN.*/}M900 K200{elsif nozzle_diameter==0.6}M900 K18{elsif nozzle_diameter==0.8};{else}M900 K30{endif} ; Filament gcode LA 1.0\n{endif}\n\n{if printer_notes=~/.*MINIIS.*/}\nM572 S{if nozzle_diameter==0.6}0.17{elsif nozzle_diameter==0.8}0.12{elsif nozzle_diameter==0.4}0.27{elsif nozzle_diameter==0.25}0.85{else}0{endif}\n{endif}\n\n{if printer_notes=~/.*MK3.5.*/}\nM572 S{if nozzle_diameter==0.4}0.035{elsif nozzle_diameter==0.5}0.025{elsif nozzle_diameter==0.6}0.02{elsif nozzle_diameter==0.8}0.014{elsif nozzle_diameter==0.25}0.12{elsif nozzle_diameter==0.3}0.08{else}0{endif} ; Filament gcode\n{endif}"
start_gcode = M862.3 P "" ; printer model check\nG90 ; use absolute coordinates\nM83 ; extruder relative mode\nM104 S170 ; set extruder temp for bed leveling\nM140 S ; set bed temp\nM109 R170 ; wait for bed leveling temp\nM190 S ; wait for bed temp\nM204 T1250 ; set travel acceleration\nG28 ; home all without mesh bed level\nG29 ; mesh bed leveling \nM204 T ; restore travel acceleration\nM104 S ; set extruder temp\nG92 E0\nG1 Y-2 X179 F2400\nG1 Z3 F720\nM109 S ; wait for extruder temp\n\n; intro line\nG1 X170 F1000\nG1 Z0.2 F720\nG1 X110 E8 F900\nG1 X40 E10 F700\nG92 E0\n\nM221 S95 ; set flow
support_material = 0
support_material_angle = 0
support_material_auto = 1
support_material_bottom_contact_distance = 0
support_material_bottom_interface_layers = 0
support_material_buildplate_only = 0
support_material_closing_radius = 2
support_material_contact_distance = 0.2
support_material_enforce_layers = 0
support_material_extruder = 0
support_material_extrusion_width = 0.35
support_material_interface_contact_loops = 0
support_material_interface_extruder = 0
support_material_interface_layers = 2
support_material_interface_pattern = rectilinear
support_material_interface_spacing = 0.2
support_material_interface_speed = 80%
support_material_pattern = rectilinear
support_material_spacing = 2
support_material_speed = 40
support_material_style = grid
support_material_synchronize_layers = 0
support_material_threshold = 50
support_material_with_sheath = 0
support_material_xy_spacing = 60%
support_tree_angle = 40
support_tree_angle_slow = 30
support_tree_branch_diameter = 2
support_tree_branch_diameter_angle = 3
support_tree_branch_diameter_double_wall = 3
support_tree_branch_distance = 1
support_tree_tip_diameter = 0.8
support_tree_top_rate = 30%
temperature = 215
template_custom_gcode = 
thick_bridges = 0
thin_walls = 0
thumbnails = 16x16/QOI, 220x124/QOI, 200x240/QOI, 380x285/PNG
thumbnails_format = PNG
toolchange_gcode = 
top_fill_pattern = monotoniclines
top_infill_extrusion_width = 0.4
top_one_perimeter_type = none
top_solid_infill_acceleration = 800
top_solid_infill_speed = 40
top_solid_layers = 5
top_solid_min_thickness = 0.7
travel_acceleration = 0
travel_lift_before_obstacle = 0
travel_max_lift = 0
travel_ramping_lift = 0
travel_short_distance_acceleration = 0
travel_slope = 0
travel_speed = 150
travel_speed_z = 12
use_firmware_retraction = 0
use_relative_e_distances = 1
use_volumetric_e = 0
variable_layer_height = 1
wall_distribution_count = 1
wall_transition_angle = 10
wall_transition_filter_deviation = 25%
wall_transition_length = 100%
wipe = 1
wipe_into_infill = 0
wipe_into_objects = 0
wipe_tower = 0
wipe_tower_acceleration = 0
wipe_tower_bridging = 10
wipe_tower_brim_width = 2
wipe_tower_cone_angle = 0
wipe_tower_extra_flow = 100%
wipe_tower_extra_spacing = 100%
wipe_tower_extruder = 0
wipe_tower_no_sparse_layers = 0
wipe_tower_width = 60
wiping_volumes_matrix = 0
wiping_volumes_use_custom_matrix = 0
xy_size_compensation = 0
z_offset = 0