Still a problem: Slic3R PE underestimates print time  

Re: Still a problem: Slic3R PE underestimates print time

It may depend on what version of Slic3rPE was used to create the gcode. Older versions were notoriously far off on the estimates. If you slice the model yourself using a newer version of Slic3rPE, estimates should be pretty close.

Re: Still a problem: Slic3R PE underestimates print time

More info... I'm using a recent slic3r (1.41.2). If I slice the model in the slic3r program directly, I get good estimates. However, if I run the same slic3r, with the same configuration, from Repetier-host, I get bad estimates. The gcodes are slightly different (but about the same size) so there must be some different parameters creeping in someplace.

Re: Still a problem: Slic3R PE underestimates print time

Best guess I can make is the .ini file loaded in by Repetier (attached below) when it starts slic3r. Some setting in there is throwing off Slic3r's estimates when invoked via Repetier. The actual gcodes are essentially the same, apart from comments and trailing zeros. Both gcodes take the same time to print.


fill_pattern = grid
bridge_speed = 30
compatible_printers_condition = printer_notes=~/.*PRINTER_VENDOR_PRUSA3D.*/ and printer_notes=~/.*PRINTER_MODEL_MK3.*/ and nozzle_diameter[0]==0.4
external_perimeter_speed = 35
infill_acceleration = 1250
infill_speed = 200
max_print_speed = 200
perimeter_speed = 45
solid_infill_speed = 200
top_solid_infill_speed = 50
single_extruder_multi_material_priming = 0
travel_speed = 180
wipe_tower_x = 170
wipe_tower_y = 125
avoid_crossing_perimeters = 0
bottom_solid_layers = 4
bridge_flow_ratio = 0.95
layer_height = 0.2
perimeter_acceleration = 800
top_infill_extrusion_width = 0.4
top_solid_layers = 5
bridge_acceleration = 1000
bridge_angle = 0
brim_width = 0
clip_multipart_objects = 1
compatible_printers =
complete_objects = 0
default_acceleration = 1000
dont_support_bridges = 1
elefant_foot_compensation = 0
ensure_vertical_shell_thickness = 1
external_fill_pattern = rectilinear
external_perimeters_first = 0
external_perimeter_extrusion_width = 0.45
extra_perimeters = 0
extruder_clearance_height = 20
extruder_clearance_radius = 20
extrusion_width = 0.45
fill_angle = 45
fill_density = 20%
first_layer_acceleration = 1000
first_layer_extrusion_width = 0.42
first_layer_height = 0.2
first_layer_speed = 20
gap_fill_speed = 40
gcode_comments = 0
infill_every_layers = 1
infill_extruder = 1
infill_extrusion_width = 0.45
infill_first = 0
infill_only_where_needed = 0
infill_overlap = 25%
interface_shells = 0
max_volumetric_extrusion_rate_slope_negative = 0
max_volumetric_extrusion_rate_slope_positive = 0
max_volumetric_speed = 0
min_skirt_length = 4
notes =
overhangs = 0
only_retract_when_crossing_perimeters = 0
ooze_prevention = 0
output_filename_format = {input_filename_base}_{layer_height}mm_{filament_type[0]}_{printer_model}.gcode
perimeters = 2
perimeter_extruder = 1
perimeter_extrusion_width = 0.45
post_process =
print_settings_id =
raft_layers = 0
resolution = 0
seam_position = nearest
skirts = 1
skirt_distance = 2
skirt_height = 3
small_perimeter_speed = 25
solid_infill_below_area = 0
solid_infill_every_layers = 0
solid_infill_extruder = 1
solid_infill_extrusion_width = 0.45
spiral_vase = 0
standby_temperature_delta = -5
support_material = 0
support_material_extruder = 0
support_material_extrusion_width = 0.35
support_material_interface_extruder = 0
support_material_angle = 0
support_material_buildplate_only = 0
support_material_enforce_layers = 0
support_material_contact_distance = 0.1
support_material_interface_contact_loops = 0
support_material_interface_layers = 2
support_material_interface_spacing = 0.2
support_material_interface_speed = 100%
support_material_pattern = rectilinear
support_material_spacing = 2
support_material_speed = 50
support_material_synchronize_layers = 0
support_material_threshold = 55
support_material_with_sheath = 0
support_material_xy_spacing = 50%
thin_walls = 0
wipe_tower = 1
wipe_tower_bridging = 10
wipe_tower_rotation_angle = 0
wipe_tower_width = 60
xy_size_compensation = 0
bed_shape = 0x0,250x0,250x210,0x210
end_gcode = G4 ; wait\nM221 S100\nM104 S0 ; turn off temperature\nM140 S0 ; turn off heatbed\nM107 ; turn off fan\n{if layer_z < max_print_height}G1 Z{z_offset+min(layer_z+30, max_print_height)}{endif} ; Move print head up\nG1 X0 Y200; home X axis\nM84 ; disable motors
machine_max_acceleration_e = 5000,5000
machine_max_acceleration_extruding = 1250,1250
machine_max_acceleration_retracting = 1250,1250
machine_max_acceleration_x = 1000,960
machine_max_acceleration_y = 1000,960
machine_max_acceleration_z = 1000,1000
machine_max_feedrate_e = 120,120
machine_max_feedrate_x = 200,100
machine_max_feedrate_y = 200,100
machine_max_feedrate_z = 12,12
machine_max_jerk_e = 1.5,1.5
machine_max_jerk_x = 8,8
machine_max_jerk_y = 8,8
machine_max_jerk_z = 0.4,0.4
machine_min_extruding_rate = 0,0
machine_min_travel_rate = 0,0
silent_mode = 1
remaining_times = 1
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_MK3\n
retract_lift_below = 209
max_print_height = 210
start_gcode = M115 U3.5.1 ; tell printer latest fw version\nM83 ; extruder relative mode\nM104 S[first_layer_temperature] ; set extruder temp\nM140 S[first_layer_bed_temperature] ; set bed temp\nM190 S[first_layer_bed_temperature] ; wait for bed temp\nM109 S[first_layer_temperature] ; wait for extruder temp\nG28 W ; home all without mesh bed level\nG80 ; mesh bed leveling\nG1 Y-3.0 F1000.0 ; go outside print area\nG92 E0.0\nG1 X60.0 E9.0 F1000.0 ; intro line\nG1 X100.0 E12.5 F1000.0 ; intro line\nG92 E0.0\nM221 S{if layer_height==0.05}100{else}95{endif}
printer_model = MK3
default_print_profile = 0.15mm OPTIMAL MK3
before_layer_gcode = ;BEFORE_LAYER_CHANGE\nG92 E0.0\n;[layer_z]\n\n
between_objects_gcode =
deretract_speed = 0
extruder_colour = #FFFF00
extruder_offset = 0x0
gcode_flavor = marlin
layer_gcode = ;AFTER_LAYER_CHANGE\n;[layer_z]
max_layer_height = 0.25
min_layer_height = 0.07
nozzle_diameter = 0.4
octoprint_apikey =
octoprint_host =
printer_settings_id =
retract_before_travel = 1
retract_before_wipe = 0%
retract_layer_change = 1
retract_length = 0.8
retract_length_toolchange = 4
retract_lift = 0.6
retract_lift_above = 0
retract_restart_extra = 0
retract_restart_extra_toolchange = 0
retract_speed = 35
serial_port =
serial_speed = 250000
single_extruder_multi_material = 0
toolchange_gcode =
use_firmware_retraction = 0
use_relative_e_distances = 1
use_volumetric_e = 0
variable_layer_height = 1
wipe = 1
z_offset = 0
printer_variant = 0.4
default_filament_profile = Prusament PLA
filament_cooling_final_speed = 50
filament_cooling_initial_speed = 10
filament_cooling_moves = 5
filament_ramming_parameters = "120 110 5.32258 5.45161 5.67742 6 6.48387 7.12903 7.90323 8.70968 9.3871 9.83871 10.0968 10.2258| 0.05 5.30967 0.45 5.50967 0.95 6.1871 1.45 7.39677 1.95 9.05484 2.45 10 2.95 10.3098 3.45 13.0839 3.95 7.6 4.45 7.6 4.95 7.6";
filament_cost = 27.82
filament_density = 1.08
filament_notes = "List of materials tested with standart ABS print settings:\n\nEsun ABS\nFil-A-Gehr ABS\nHatchboxABS\nPlasty Mladec ABS"
bed_temperature = 110
bridge_fan_speed = 30
cooling = 0
disable_fan_first_layers = 3
fan_always_on = 0
fan_below_layer_time = 20
filament_colour = #3A80CA
filament_max_volumetric_speed = 11
filament_type = ABS
first_layer_bed_temperature = 100
first_layer_temperature = 255
max_fan_speed = 30
min_fan_speed = 20
temperature = 255
end_filament_gcode = "; Filament-specific end gcode"
extrusion_multiplier = 1
filament_loading_speed = 28
filament_loading_speed_start = 3
filament_unloading_speed = 90
filament_unloading_speed_start = 100
filament_toolchange_delay = 0
filament_load_time = 0
filament_unload_time = 0
filament_minimal_purge_on_wipe_tower = 15
filament_diameter = 1.75
filament_settings_id = ""
filament_soluble = 0
min_print_speed = 15
slowdown_below_layer_time = 20
start_filament_gcode = "M900 K{if printer_notes=~/.*PRINTER_HAS_BOWDEN.*/}200{else}30{endif}; Filament gcode"


Re: Still a problem: Slic3R PE underestimates print time

Do the acceleration and jerk values match your desktop settings?

Re: Still a problem: Slic3R PE underestimates print time

Yes they all match (same settings used by Rep. as by standalone slic3r)