Estimated Printing Time has negative value

Taxus812

Morning

I have a question. I am slicing http://www.thingiverse.com/thing:18365/#files (dragonSpikeHigh1) using Slic3r in Repetier host 1.6.2.

After slicing I am seeing an Estimated print time of -8s.

I have see this a few times with some one layer calibration STL files but never with a big model. Is there something I should dbe looking at ?

Repetier

Can you provide a copy of the produced gcode?

I have seen this when the end contains a G28 resetting time computation. But I thought that has been fixed.

Taxus812

Full G-code was to large to fit. I hope you really only need the header and footer information, so here is the beginning and end of the file.

BEGINNING OF CODE

generated by Slic3r 1.2.9 on 2017-01-03 at 08:08:07

; external perimeters extrusion width = 0.40mm

; perimeters extrusion width = 0.67mm

; infill extrusion width = 0.67mm

; solid infill extrusion width = 0.67mm

; top infill extrusion width = 0.67mm

; support material extrusion width = 0.40mm

M107

M190 S50 ; set bed temperature

M104 S215 ; set temperature

G28 ; home all axes

G1 Z5 F5000 ; lift nozzle

M109 S215 ; wait for temperature to be reached

G21 ; set units to millimeters

G90 ; use absolute coordinates

M82 ; use absolute distances for extrusion

G92 E0

G1 Z0.180 F7800.000

G1 E-2.00000 F2400.00000

G92 E0

G1 X67.707 Y78.647 F7800.000

G1 E2.00000 F2400.00000

G1 X101.484 Y49.568 E4.13924 F1800.000

END OF CODE

G1 X101.326 Y121.109 F7800.000

G1 X100.696 Y120.390 E7.21868 F600.000

G1 X100.292 Y119.867 E7.25318

G1 E5.25318 F2400.00000

G92 E0

M107

M104 S0 ;extruder heater off

M140 S0 ;heated bed heater off (if you have it)

G91 ;relative positioning

G1 E-1 F300 ;retract the filament a bit before lifting the nozzle, to release some of the pressure

G1 Z+0.5 E-5 X-20 Y-20 F{travel_speed} ;move Z up a bit and retract filament even more

G28 X0 Y0 ;move X/Y to min endstops, so the head is out of the way

G90 ;absolute positioning

G1 Y190 ;bring bed forward

M84 ;steppers off

; filament used = 31020.3mm (74.6cm3)

; avoid_crossing_perimeters = 0

; bed_shape = 0x0,200x0,200x200,0x200

; bed_temperature = 0

; before_layer_gcode =

; bridge_acceleration = 0

; bridge_fan_speed = 100

; brim_width = 0

; complete_objects = 0

; cooling = 1

; default_acceleration = 0

; disable_fan_first_layers = 3

; duplicate_distance = 6

; end_gcode = M104 S0 ;extruder heater off\nM140 S0 ;heated bed heater off (if you have it)\nG91 ;relative positioning\nG1 E-1 F300 ;retract the filament a bit before lifting the nozzle, to release some of the pressure\nG1 Z+0.5 E-5 X-20 Y-20 F{travel_speed} ;move Z up a bit and retract filament even more\nG28 X0 Y0 ;move X/Y to min endstops, so the head is out of the way\nG90 ;absolute positioning\nG1 Y190 ;bring bed forward\nM84 ;steppers off\n

; extruder_clearance_height = 20

; extruder_clearance_radius = 20

; extruder_offset = 0x0

; extrusion_axis = E

; extrusion_multiplier = 1

; fan_always_on = 0

; fan_below_layer_time = 60

; filament_colour = #FFFFFF

; filament_diameter = 1.75

; first_layer_acceleration = 0

; first_layer_bed_temperature = 50

; first_layer_extrusion_width = 0

; first_layer_speed = 30

; first_layer_temperature = 215

; gcode_arcs = 0

; gcode_comments = 0

; gcode_flavor = reprap

; infill_acceleration = 0

; infill_first = 0

; layer_gcode =

; max_fan_speed = 100

; max_print_speed = 60

; max_volumetric_speed = 0

; min_fan_speed = 35

; min_print_speed = 10

; min_skirt_length = 25

; notes =

; nozzle_diameter = 0.4

; only_retract_when_crossing_perimeters = 1

; ooze_prevention = 0

; output_filename_format = [input_filename_base].gcode

; perimeter_acceleration = 0

; post_process =

; pressure_advance = 0

; resolution = 0

; retract_before_travel = 2

; retract_layer_change = 0

; retract_length = 2

; retract_length_toolchange = 10

; retract_lift = 0

; retract_restart_extra = 0

; retract_restart_extra_toolchange = 0

; retract_speed = 40

; skirt_distance = 3

; skirt_height = 1

; skirts = 1

; slowdown_below_layer_time = 5

; spiral_vase = 0

; standby_temperature_delta = -5

; start_gcode = G28 ; home all axes\nG1 Z5 F5000 ; lift nozzle\n

; temperature = 215

; threads = 2

; toolchange_gcode =

; travel_speed = 130

; use_firmware_retraction = 0

; use_relative_e_distances = 0

; use_volumetric_e = 0

; vibration_limit = 0

; wipe = 0

; z_offset = 0

; dont_support_bridges = 1

; extrusion_width = 0

; first_layer_height = 90%

; infill_only_where_needed = 0

; interface_shells = 0

; layer_height = 0.2

; raft_layers = 0

; seam_position = random

; support_material = 1

; support_material_angle = 0

; support_material_contact_distance = 0.2

; support_material_enforce_layers = 0

; support_material_extruder = 1

; support_material_extrusion_width = 0

; support_material_interface_extruder = 1

; support_material_interface_layers = 3

; support_material_interface_spacing = 0

; support_material_interface_speed = 100%

; support_material_pattern = pillars

; support_material_spacing = 2.5

; support_material_speed = 60

; support_material_threshold = 0

; xy_size_compensation = 0

; bottom_solid_layers = 5

; bridge_flow_ratio = 1

; bridge_speed = 60

; external_fill_pattern = rectilinear

; external_perimeter_extrusion_width = 0

; external_perimeter_speed = 50%

; external_perimeters_first = 0

; extra_perimeters = 1

; fill_angle = 45

; fill_density = 20%

; fill_pattern = rectilinear

; gap_fill_speed = 20

; infill_every_layers = 1

; infill_extruder = 1

; infill_extrusion_width = 0

; infill_overlap = 15%

; infill_speed = 50

; overhangs = 1

; perimeter_extruder = 1

; perimeter_extrusion_width = 0

; perimeter_speed = 40

; perimeters = 3

; small_perimeter_speed = 15

; solid_infill_below_area = 70

; solid_infill_every_layers = 0

; solid_infill_extruder = 1

; solid_infill_extrusion_width = 0

; solid_infill_speed = 20

; thin_walls = 1

; top_infill_extrusion_width = 0

; top_solid_infill_speed = 15

; top_solid_layers = 5

Repetier

Could not fully verify but saw

G1 Z+0.5 E-5 X-20 Y-20 F{travel_speed} ;move Z up a bit and retract filament even more

which is wrong. F param must have a number and no string. I guess it was meant to be replaced but slic3r did not do that and now computation is with F=0 or something different. If it is not that line alone I need the full gcode. Use dropbox/google/pastebin whatever in that case.

Taxus812

That was it. I found it in my end G-code. I used the code in the slicer profile located here http://3dprinterwiki.info/wiki/wanhao-duplicator-i3/duplicator-i3-factory-documentation-files/. I must not have imported correctly and then I missed it.

Thanks again for your help.