Over extrusion on Taz 5

Kiri:Moto FDM
1

I am having some kind of overextrusion problem with a taz 5 printer. 0.5 nozzle and using 1.75mm filament. I imagine the problem lies somewhere in the fact that I use both 3mm and 1.75mm filament. Below is the header code and g code of what I am trying to print. One of the comments is “Filament used: 0.293389m” this is because i took the header code form CURALE - I am pretty sure my kirimoto settings are different - but I just can’t tell in the gcode where it would be denoting filament diameter.
Header:

;Generated by Cura LulzBot Edition GCodeWriter Version: 3.6.37
;FLAVOR:Marlin
;TIME:989
;Filament used: 0.293389m
;Layer height: 0.14
;Generated with Cura_SteamEngine 3.6.37-win10
M82 ;absolute extrusion mode
;This G-Code has been generated specifically for the LulzBot TAZ 5 with standard extruder
M75 ; start GLCD timer
M140 S60.0 ; start bed heating up
G90 ; absolute positioning
M107 ; disable fans
M82 ; set extruder to absolute mode
G28 X0 Y0 ; home X and Y
G28 Z0 ; home Z
G1 Z15.0 F175 ; move extruder up
M117 Heating… ; progress indicator message on LCD
M109 R210 ; wait for extruder to reach printing temp
M190 R60.0 ; wait for bed to reach printing temp
G92 E0 ; set extruder position to 0
G1 F200 E0 ; prime the nozzle with filament
G92 E0 ; re-set extruder position to 0
G1 F175 ; set travel speed
M203 X192 Y208 Z3 ; set limits on travel speed
M117 TAZ 5 Printing… ; progress indicator message on LCD

** Partial Gcode from KM**
; Generated by Kiri:Moto 3.9.1
; Tue Apr 11 2023 07:51:10 GMT-0400 (Eastern Daylight Time)
; Bed left:0 right:298 top:275 bottom:0
; Bed type: fixed
; Target: LulzBot Taz5
; — process —
; processName = Taz 5 .3 height
; sliceHeight = 0.3
; sliceShells = 3
; sliceShellOrder = in-out
; sliceLayerStart = last
; sliceFillAngle = 45
; sliceFillOverlap = 0.3
; sliceFillSparse = 0.25
; sliceFillRate = 0
; sliceFillType = hex
; sliceSupportDensity = 0.25
; sliceSupportOffset = 1
; sliceSupportGap = 1
; sliceSupportSize = 5
; sliceSupportArea = 0.1
; sliceSupportExtra = 0
; sliceSupportAngle = 50
; sliceSupportNozzle = 0
; sliceSupportEnable = false
; sliceSolidMinArea = 1
; sliceBottomLayers = 3
; sliceTopLayers = 3
; firstSliceHeight = 0.3
; firstLayerRate = 30
; firstLayerFillRate = 35
; firstLayerPrintMult = 1
; firstLayerLineMult = 1
; firstLayerYOffset = 0
; firstLayerNozzleTemp = 208
; firstLayerBedTemp = 56
; firstLayerBrim = 0
; firstLayerBrimTrig = 0
; firstLayerBeltLead = 3
; outputRaft = false
; outputRaftSpacing = 0.2
; outputTemp = 208
; outputBedTemp = 56
; outputFeedrate = 50
; outputFinishrate = 50
; outputSeekrate = 80
; outputShellMult = 1.25
; outputFillMult = 1.25
; outputSparseMult = 1.25
; outputRetractDist = 1.1
; outputRetractSpeed = 30
; outputRetractDwell = 20
; outputBrimCount = 2
; outputBrimOffset = 2
; outputShortPoly = 100
; outputMinSpeed = 10
; outputCoastDist = 0
; outputLayerRetract = false
; outputOriginCenter = false
; outputInvertX = false
; outputInvertY = false
; sliceMinHeight = 0
; sliceAdaptive = false
; zHopDistance = 0.2
; antiBacklash = 1
; sliceFillWidth = 1
; firstLayerFanSpeed = 0
; outputFanSpeed = 255
; outputRetractWipe = 0
; outputPurgeTower = 0
; arcTolerance = 0
; ranges = []
; sliceLineWidth = 0
; sliceFillRepeat = 1
; sliceSupportSpan = 5
; sliceSupportOutline = true
; firstLayerBrimIn = 0
; firstLayerBrimGap = 0
; firstLayerBeltBump = 0
; firstLayerFlatten = 0
; outputDraftShield = false
; outputBeltFirst = false
; outputAvoidGaps = true
; outputLoops = 0
; sliceFillGrow = 0
; sliceSolidRate = 0
; outputAlternating = false
; sliceDetectThin = off
; sliceLayerStartX = 0
; sliceLayerStartY = 0
; sliceSupportGrow = 0
; — startup —
;Generated by Cura LulzBot Edition GCodeWriter Version: 3.6.37
;FLAVOR:Marlin
;TIME:989
;Filament used: 0.293389m
;Layer height: 0.14
;Generated with Cura_SteamEngine 3.6.37-win10
M82 ;absolute extrusion mode
;This G-Code has been generated specifically for the LulzBot TAZ 5 with standard extruder
M75 ; start GLCD timer
M140 S60.0 ; start bed heating up
G90 ; absolute positioning
M107 ; disable fans
M82 ; set extruder to absolute mode
G28 X0 Y0 ; home X and Y
G28 Z0 ; home Z
G1 Z15.0 F175 ; move extruder up
M117 Heating… ; progress indicator message on LCD
M109 R210 ; wait for extruder to reach printing temp
M190 R60.0 ; wait for bed to reach printing temp
G92 E0 ; set extruder position to 0
G1 F200 E0 ; prime the nozzle with filament
G92 E0 ; re-set extruder position to 0
G1 F175 ; set travel speed
M203 X192 Y208 Z3 ; set limits on travel speed
M117 TAZ 5 Printing… ; progress indicator message on LCD
G1 E-1.1000 F1800 ; e-retract 1.1
;; — layer 0 (0.300 @ 0.3) —
M106 S0
G1 Z0.3000 F4800
; feature brim
G1 X146.3682 Y161.6600
G1 E0.0000 F1800 ; e-engage 1.1
G4 P20
G1 X146.3643 E0.0002
G1 X146.3653 Y105.3770 E3.4461
G1 X142.3766 Y105.3712 E3.6903
G1 X142.0184 Y105.3363 E3.7124
G1 X141.8052 Y105.2716 E3.7260
G1 X141.5607 Y105.1413 E3.7430
G1 X141.3183 Y104.8951 E3.7641
G1 X141.1685 Y104.6148 E3.7836
G1 X141.0865 Y104.2190 E3.8083
G1 X141.1698 Y103.8256 E3.8330
G1 X141.3199 Y103.5442 E3.8525
G1 X141.5960 Y103.2681 E3.8764
G1 X141.9642 Y103.1113 E3.9009
G1 X142.3848 Y103.0709 E3.9268
G1 X146.3653 Y103.0711 E4.1705
G1 Y92.3720 E4.8255
G1 X142.3756 Y92.3691 E5.0698
G1 X142.0203 Y92.3345 E5.0916
G1 X141.8068 Y92.2695 E5.1053
G1 X141.5668 Y92.1414 E5.1220
G1 X141.3196 Y91.8953 E5.1433
G1 X141.1905 Y91.6531 E5.1601
G1 X141.1250 Y91.4380 E5.1739
G1 X141.0983 Y91.1672 E5.1905
G1 X141.1670 Y90.8275 E5.2118
G1 X141.2959 Y90.5864 E5.2285
G1 X141.4722 Y90.3714 E5.2455
G1 X141.7610 Y90.1818 E5.2667
G1 X142.0217 Y90.1027 E5.2834
G1 X142.3797 Y90.0670 E5.3054
G1 X146.3653 E5.5494
G1 Y81.9710 E6.0451
G1 X129.0374 E7.1060
G1 X127.4308 Y82.1299 E7.2048
G1 X125.6917 Y82.6569 E7.3161
G1 X124.0890 Y83.5139 E7.4273
G1 X122.6857 Y84.6667 E7.5385
G1 X121.5315 Y86.0702 E7.6498
G1 X120.6761 Y87.6727 E7.7610
G1 X120.1477 Y89.4118 E7.8723
G1 X119.9900 Y91.0195 E7.9712
G1 Y131.0859 E10.4242
G1 X120.1467 Y132.6786 E10.5222
G1 X120.6739 Y134.4183 E10.6335
G1 X121.5308 Y136.0209 E10.7448
G1 X122.8526 Y137.6300 E10.8723
G1 X121.5308 Y139.2390 E10.9998
G1 X120.6739 Y140.8417 E11.1110
G1 X120.1467 Y142.5814 E11.2223
G1 X119.9900 Y144.1741 E11.3203
G1 Y166.6400 E12.6958
G1 X119.9930 E12.6960
G1 Y184.1105 E13.7656
G1 X120.1506 Y185.7175 E13.8644
G1 X120.6779 Y187.4561 E13.9757
G1 X121.5348 Y189.0602 E14.0870
G1 X122.6882 Y190.4628 E14.1982
G1 X124.0908 Y191.6162 E14.3094
G1 X125.6952 Y192.4733 E14.4207
G1 X127.4336 Y193.0000 E14.5319
G1 X129.0392 Y193.1590 E14.6307
G1 X146.3682 E15.6917
G1 Y185.0630 E16.1874
G1 X142.3817 E16.4314
G1 X142.0237 Y185.0273 E16.4535
G1 X141.8081 Y184.9619 E16.4673
G1 X141.5654 Y184.8324 E16.4841
G1 X141.3210 Y184.5867 E16.5053
G1 X141.1929 Y184.3472 E16.5219
G1 X141.1283 Y184.1341 E16.5356
G1 X141.1063 Y183.9115 E16.5493
G1 X141.1281 Y183.6903 E16.5629
G1 X141.1934 Y183.4751 E16.5767
G1 X141.3251 Y183.2282 E16.5938
G1 X141.5751 Y182.9863 E16.6151
G1 X141.8109 Y182.8599 E16.6315
G1 X142.0221 Y182.7955 E16.6450
G1 X142.3783 Y182.7609 E16.6669
G1 X146.3682 Y182.7580 E16.9112
G1 Y172.0600 E17.5662
G1 X142.3792 E17.8104
G1 X142.0239 Y172.0250 E17.8322
G1 X141.8095 Y171.9597 E17.8460
G1 X141.6108 Y171.8535 E17.8598
G1 X141.3965 Y171.6780 E17.8767
G1 X141.2067 Y171.3889 E17.8979
G1 X141.1134 Y171.0813 E17.9176
G1 X141.1139 Y170.7340 E17.9388
G1 X141.1932 Y170.4730 E17.9555
G1 X141.3220 Y170.2316 E17.9723
G1 X141.5665 Y169.9871 E17.9935
G1 X141.8082 Y169.8580 E18.0102
G1 X142.0205 Y169.7937 E18.0238
G1 X142.3792 Y169.7588 E18.0459
G1 X146.3682 Y169.7530 E18.2901
G1 Y161.6600 E18.7856
G1 X145.8682 Y162.1600 F4800
G1 X145.8643 E18.7858 F1800
G1 X145.8653 Y105.8763 E22.2318
G1 X142.3519 Y105.8712 E22.4469
G1 X141.9207 Y105.8292 E22.4734
G1 X141.6131 Y105.7358 E22.4931
G1 X141.2581 Y105.5465 E22.5177
G1 X140.9114 Y105.1944 E22.5480
G1 X140.6936 Y104.7869 E22.5763
G1 X140.5756 Y104.2179 E22.6118
G1 X140.6953 Y103.6528 E22.6472
G1 X140.9138 Y103.2432 E22.6756
G1 X141.3110 Y102.8460 E22.7100
G1 X141.8395 Y102.6209 E22.7452
G1 X142.3609 Y102.5709 E22.7773
G1 X145.8653 Y102.5711 E22.9918
G1 Y92.8716 E23.5857
G1 X142.3511 Y92.8691 E23.8008
G1 X141.9223 Y92.8273 E23.8272
G1 X141.6145 Y92.7336 E23.8469
G1 X141.2663 Y92.5478 E23.8711
G1 X140.9136 Y92.1967 E23.9015
G1 X140.7264 Y91.8454 E23.9259
G1 X140.6322 Y91.5363 E23.9457
G1 X140.5933 Y91.1416 E23.9700
G1 X140.6915 Y90.6565 E24.0003
G1 X140.8781 Y90.3074 E24.0245
G1 X141.1339 Y89.9953 E24.0492
G1 X141.5469 Y89.7242 E24.0794
G1 X141.9234 Y89.6100 E24.1035
G1 X142.3548 Y89.5670 E24.1301
G1 X145.8653 E24.3450
G1 Y82.4710 E24.7795
G1 X129.0620 E25.8082

2

Do you mix use of 3mm and 1.75mm filament in the same job? You need to setup either a different extruder or different device for each filament source and change this field in Device Setup. The gcode header settings do not affect this unlees they’re changing stepper rates, which would be wholly unexpected.

Screen Shot 2023-04-11 at 2.13.58 PM
Screen Shot 2023-04-11 at 2.13.58 PM1510×1192 187 KB

3

I have set the filament as 1.75 and I don’t do any switches during a single job.

image
image735×548 34.2 KB

For some reason at the beginning of the print, after the header, I am getting a difference in feedrates compared to the KM slicer and the Cura
G1 F600 E-1 is the Cura
G1 E-1.1000 F1800 is KM

I am unsure how these are generated

4

under the output menu. non-print speeds are move speeds. finish speeds are outer shells and top/bottom flats surfaces. regardless of what the gcode says, speed is ultimately capped by firmware settings for speed and acceleration. meaning the gcode could differ but the output could end up being the same if your firmware is configured properly.

Screen Shot 2023-04-11 at 4.04.26 PM
Screen Shot 2023-04-11 at 4.04.26 PM522×736 66.3 KB

1 Like
5

I will keep testing. I am not sure why it seems to be overextruding if the only place to really change that would be the filament diameter in KM. - maybe it was the model.

6

What are your shell / solid / infill factors set to? I still don’t understand how you are changing between 3mm and 1.75mm filament.

1 Like
7

They are all 1.25 - I saw this and thought it was wrong but I think it was the default - so I left it.

is this saying that they are 125% flow rate?

The lulzbots have extruders that, I think, prefer 2.85mm, filament but work with 1.75 and 3mm. I think years ago they thought they would have some advantage if they were the only producer of 2.85 and their machines used it. They seem to now be abandoning this but my old machines still use both.

I am a teacher and run an engineering lab. I am very restriced in the vendors that I can order from (it is a terrible system - thank you NJ…) so sometimes all they have is 3mm filament or 1.75 so I have to make both work.

8

OK that fixed it - I wonder why those values were 1.25. Anyway thank you again.

1 Like
9

It’s highly machine-dependent based on default firmware settings. 1.25 is the area ratio between a square and a circle for a given radius/span. It’s the method I used starting 10 years ago. Some slicers use a different ratio function, so their flow factor is < 1 instead of > 1. In the end, you will always want to tune to your machine after tuning your firmware’s extruder steps/mm.

1 Like
10

Got it - thanks. So far the print is coming out great.

1 Like