[Cura not extruding enough material in GCode]

Hey Guys,

 

I have been having under extrusion issues and pinned down the issue to something I found in the GCode that cura compiles. The two GCodes below represent two different models loaded into cura, but with all of the same material and printer settings, the only difference is the file that was opened in cura. If you look at the first bit when it prints the prime tower, it has all the same x and y values, but the extrusion amounts for the second file (the one I need to print..) are almost a magnitude smaller than the one that prints normally. Any ideas as to what causes this or how to fix? The file I am trying to print did come from Netfabb if that has any effect.

First File (prints normally)

 

;START_OF_HEADER
;HEADER_VERSION:0.1
;FLAVOR:Griffin
;GENERATOR.NAME:Cura_SteamEngine
;GENERATOR.VERSION:3.6.0
;GENERATOR.BUILD_DATE:2018-11-12
;TARGET_MACHINE.NAME:Ultimaker 3
;EXTRUDER_TRAIN.0.INITIAL_TEMPERATURE:215
;EXTRUDER_TRAIN.0.MATERIAL.VOLUME_USED:5104
;EXTRUDER_TRAIN.0.MATERIAL.GUID:532e8b3d-5fd4-4149-b936-53ada9bd6b85
;EXTRUDER_TRAIN.0.NOZZLE.DIAMETER:0.4
;EXTRUDER_TRAIN.0.NOZZLE.NAME:AA 0.4
;EXTRUDER_TRAIN.1.INITIAL_TEMPERATURE:100
;EXTRUDER_TRAIN.1.MATERIAL.VOLUME_USED:1339
;EXTRUDER_TRAIN.1.MATERIAL.GUID:86a89ceb-4159-47f6-ab97-e9953803d70f
;EXTRUDER_TRAIN.1.NOZZLE.DIAMETER:0.4
;EXTRUDER_TRAIN.1.NOZZLE.NAME:BB 0.4
;BUILD_PLATE.TYPE:glass
;BUILD_PLATE.INITIAL_TEMPERATURE:60
;PRINT.TIME:12198
;PRINT.SIZE.MIN.X:9
;PRINT.SIZE.MIN.Y:6
;PRINT.SIZE.MIN.Z:0.27
;PRINT.SIZE.MAX.X:213
;PRINT.SIZE.MAX.Y:207
;PRINT.SIZE.MAX.Z:4
;END_OF_HEADER
;Generated with Cura_SteamEngine 3.6.0
T0
M82 ;absolute extrusion mode

G92 E0
M109 S215
G0 F15000 X9 Y6 Z2
G280
G1 F1500 E-6.5
;LAYER_COUNT:50
;LAYER:0
M107
M204 S625
M205 X6 Y6
G0 F5000 X163.408 Y36.634 Z0.27
M204 S500
M205 X5 Y5
;TYPE:SKIRT
G1 F1500 E0
G1 F1200 X163.56 Y36.036 E0.01097
G1 X164.128 Y34.163 E0.04576
G1 X164.382 Y33.463 E0.059
G1 X164.649 Y32.907 E0.06996
G1 X165.575 Y31.175 E0.10487
G1 X165.96 Y30.538 E0.1181
G1 X166.328 Y30.047 E0.12901
G1 X167.569 Y28.534 E0.1638
G1 X168.071 Y27.985 E0.17702
G1 X168.531 Y27.571 E0.18802
G1 X170.046 Y26.328 E0.22286
G1 X170.646 Y25.888 E0.23608
G1 X171.175 Y25.575 E0.24701
G1 X172.907 Y24.649 E0.28192
G1 X173.581 Y24.333 E0.29515
G1 X174.164 Y24.128 E0.30614
G1 X176.038 Y23.56 E0.34095
G1 X176.761 Y23.383 E0.35418
G1 X177.37 Y23.295 E0.36512
G1 X179.322 Y23.103 E0.39998
G1 X180.065 Y23.07 E0.4132
G1 X180.679 Y23.103 E0.42413
G1 X182.63 Y23.295 E0.45898
G1 X183.365 Y23.408 E0.4722
G1 X183.961 Y23.56 E0.48313
G1 X185.835 Y24.128 E0.51794
G1 X186.535 Y24.382 E0.53118
G1 X187.092 Y24.649 E0.54216
G1 X188.824 Y25.575 E0.57707
G1 X189.461 Y25.96 E0.5903
G1 X189.952 Y26.328 E0.60121
G1 X191.465 Y27.569 E0.63599
G1 X192.014 Y28.071 E0.64922
G1 X192.428 Y28.531 E0.66022
G1 X193.671 Y30.046 E0.69505
G1 X194.111 Y30.646 E0.70828
G1 X194.424 Y31.175 E0.71921
G1 X195.35 Y32.907 E0.75412
G1 X195.666 Y33.581 E0.76735
G1 X195.871 Y34.163 E0.77832
G1 X196.439 Y36.036 E0.81311
G1 X196.616 Y36.759 E0.82634
G1 X196.703 Y37.365 E0.83723
G1 X196.896 Y39.316 E0.87208

 

 

Second file (under extrudes)

 

 

;START_OF_HEADER
;HEADER_VERSION:0.1
;FLAVOR:Griffin
;GENERATOR.NAME:Cura_SteamEngine
;GENERATOR.VERSION:3.6.0
;GENERATOR.BUILD_DATE:2018-11-12
;TARGET_MACHINE.NAME:Ultimaker 3
;EXTRUDER_TRAIN.0.INITIAL_TEMPERATURE:215
;EXTRUDER_TRAIN.0.MATERIAL.VOLUME_USED:433
;EXTRUDER_TRAIN.0.MATERIAL.GUID:532e8b3d-5fd4-4149-b936-53ada9bd6b85
;EXTRUDER_TRAIN.0.NOZZLE.DIAMETER:0.4
;EXTRUDER_TRAIN.0.NOZZLE.NAME:AA 0.4
;EXTRUDER_TRAIN.1.INITIAL_TEMPERATURE:100
;EXTRUDER_TRAIN.1.MATERIAL.VOLUME_USED:1119
;EXTRUDER_TRAIN.1.MATERIAL.GUID:86a89ceb-4159-47f6-ab97-e9953803d70f
;EXTRUDER_TRAIN.1.NOZZLE.DIAMETER:0.4
;EXTRUDER_TRAIN.1.NOZZLE.NAME:BB 0.4
;BUILD_PLATE.TYPE:glass
;BUILD_PLATE.INITIAL_TEMPERATURE:60
;PRINT.TIME:4501
;PRINT.SIZE.MIN.X:9
;PRINT.SIZE.MIN.Y:6
;PRINT.SIZE.MIN.Z:0.27
;PRINT.SIZE.MAX.X:213
;PRINT.SIZE.MAX.Y:207
;PRINT.SIZE.MAX.Z:4.12
;END_OF_HEADER
;Generated with Cura_SteamEngine 3.6.0
T0
M82 ;absolute extrusion mode

G92 E0
M109 S215
G0 F15000 X9 Y6 Z2
G280
G1 F1500 E-6.5
;LAYER_COUNT:42
;LAYER:0
M107
M204 S625
M205 X6 Y6
G0 F5000 X163.408 Y36.634 Z0.27
M204 S500
M205 X5 Y5
;TYPE:SKIRT
G1 F1500 E0
G1 F1200 X163.56 Y36.036 E0.00203
G1 X164.128 Y34.163 E0.00847
G1 X164.382 Y33.463 E0.01093
G1 X164.649 Y32.907 E0.01296
G1 X165.575 Y31.175 E0.01942
G1 X165.96 Y30.538 E0.02187
G1 X166.328 Y30.047 E0.02389
G1 X167.569 Y28.534 E0.03033
G1 X168.071 Y27.985 E0.03278
G1 X168.531 Y27.571 E0.03482
G1 X170.046 Y26.328 E0.04127
G1 X170.646 Y25.888 E0.04372
G1 X171.175 Y25.575 E0.04574
G1 X172.907 Y24.649 E0.05221
G1 X173.581 Y24.333 E0.05466
G1 X174.164 Y24.128 E0.05669
G1 X176.038 Y23.56 E0.06314
G1 X176.761 Y23.383 E0.06559
G1 X177.37 Y23.295 E0.06761
G1 X179.322 Y23.103 E0.07407
G1 X180.065 Y23.07 E0.07652
G1 X180.679 Y23.103 E0.07854
G1 X182.63 Y23.295 E0.085
G1 X183.365 Y23.408 E0.08744
G1 X183.961 Y23.56 E0.08947
G1 X185.835 Y24.128 E0.09592
G1 X186.535 Y24.382 E0.09837
G1 X187.092 Y24.649 E0.1004
G1 X188.824 Y25.575 E0.10687
G1 X189.461 Y25.96 E0.10932
G1 X189.952 Y26.328 E0.11134
G1 X191.465 Y27.569 E0.11778
G1 X192.014 Y28.071 E0.12023
G1 X192.428 Y28.531 E0.12226
G1 X193.671 Y30.046 E0.12871
G1 X194.111 Y30.646 E0.13116
G1 X194.424 Y31.175 E0.13319
G1 X195.35 Y32.907 E0.13965
G1 X195.666 Y33.581 E0.1421
G1 X195.871 Y34.163 E0.14413
G1 X196.439 Y36.036 E0.15058
G1 X196.616 Y36.759 E0.15303
G1 X196.703 Y37.365 E0.15504
G1 X196.896 Y39.316 E0.1615

[Ultimaker 3 Under Extrusion]

Smithy,

 

My filament seems to look normal, no grinding present. I cleaned the nozzle using the atomic method that UM website outlines. I also disassembled the printcore and checked to make sure there were no obstructions either and everything looked clean.

 

I just pulled some small wispy strands from the fan but it didn't visibly or audibly make a difference on the fan speed. However, running the print again it does seem to be doing better, and the filament is sticking to the plate evenly now. The line width still seems to be thinner than expected. When printing the brim, the lines are suppose to touch right? mine are printing just thin enough where there is a small gap in between each line. 

[Ultimaker 3 Under Extrusion]

Hey Guys,

 

I've been struggling with under extrusion with my ultimaker 3 for a couple weeks now. Whenever I start a print, it lays down the filament fine for the first 20 seconds or so, then the line width becomes thinner and eventually stops sticking to the build plate. I have done the active and manual leveling, cleaned out the nozzle, and verified the nozzle and bed temps. I would appreciate some help and advice for how to fix the solution. I've attached a picture showing the progression of the first couple passes.

Thanks!

[Can extrude filament but can't print.]

@goldblam Did you ever find a fix to your problem? I am experiencing the same issue with my UM3.