Cura 5.1 and TAZ 6

General LulzBot TAZ
1

I’ve spent a bunch of time getting Cura 5.1 configured with my Lulzbot TAZ 6. I wanted to share what I have and see if anyone else has found anything else I missed.

Build plate

X: 280mm
Y: 280mm
Z: 250mm

rectangular

Heated bed: yes

Gcode flavor: marlin

Printhead

X min: -20mm
Y min: -10mm
X max: 10mm
Y max: 10mm

Gantry height 250 mm

Apply extruder offsets to GCode: yes

Start gcode

;This G-Code has been generated specifically for the LulzBot TAZ 6 with standard extruder
;Modified by HarlemSquirrel for Cura 5.1
M73 P0 ; clear GLCD progress bar
M75 ; start GLCD timer
G26 ; clear potential 'probe fail' condition
M107 ; disable fans
G90 ; absolute positioning
M420 S0 ; disable previous leveling matrix
M140 S{material_bed_temperature_layer_0} ; start bed heating up
M104 S{material_standby_temperature} ; soften filament
G28 ; Home all axis
M117 Heating... ; LCD status message
M109 R{material_standby_temperature} ; wait for temp
M82 ; set extruder to absolute mode
G92 E0 ; set extruder position to 0
G1 E-10 F100 ; retract filament 10mm
M104 S{material_standby_temperature} ; set to wipe temp
;M106 ; turn on fans to speed cooling
M109 R{material_standby_temperature} ; wait for to reach temp
M107 ; turn off fan
;M206 X0 Y0 Z0              ; uncomment to adjust wipe position (+X ~ nozzle moves left)(+Y ~ nozzle moves forward)(+Z ~ nozzle moves down)
G12 ; wiping sequence
M106 S255 ; turn on fan to blow away fuzzies
G4 S5 ; wait 5 seconds
M107 ; turn off fan
;M206 X0 Y4 Z0 ; reseting stock nozzle position ### CAUTION: changing this line can affect print quality ###
M109 R{material_standby_temperature} ; wait for extruder to reach probe temp
G1 X-10 Y293 F4000 ; move above first probe point
M204 S100 ; set probing acceleration
G29 ; start auto-leveling sequence
M420 S1 ; activate bed level matrix
M204 S500 ; restore standard acceleration
M104 S{material_print_temperature_layer_0} ; set extruder to print temp
;M425 Z     ; use measured Z backlash for compensation
;M425 Z F0     ; turn off measured Z backlash compensation. (if activated in the quality settings, this command will automatically be ignored)
G1 X0 Y0 Z15 F5000 ; move up off last probe point
G4 S1 ; pause
M117 Heating... ; progress indicator message on LCD
M109 R{material_print_temperature_layer_0} ; wait for extruder to reach printing temp
M190 R{material_bed_temperature_layer_0} ; wait for bed to reach printing temp
G1 Z2 E0 F75 ; prime tiny bit of filament into the nozzle
M82 ; set extruder to absolute mode
M400 ; wait for moves to finish
M117 TAZ 6 Printing... ; progress indicator message on LCD

End gcode

; Customized by HarlemSquirrel for Lulzbot TAZ 6 and Cura 5.1
M400 ; wait for moves to finish
M140 S45 ; start bed cooling
M104 S0 ; disable hotend
M107 ; disable fans
G91 ; relative positioning
G1 E-1 F300 ; filament retraction to release pressure
G1 Z20 E-5 X-20 Y-20 F3000 ; lift up and retract even more filament
G1 E6 ; re-prime extruder
M117 Cooling please wait ; progress indicator message on LCD
G90 ; absolute positioning
G1 Y0 F3000 ; move to cooling position
M190 R45 ; wait for bed to cool off
G1 Y280 F3000 ; present finished print
M140 S0 ; cool down
M77 ; stop GLCD timer
M84 ; disable steppers
G90 ; absolute positioning
M117 Print complete ; progress indicator message
2

Looks good, excellent work!

What version of TAZ 6 firmware are you using? What tool heads?

I use the Universal 2.0.9.0.13 and for my Single Extruder V2.1 I added the following to the start gcode:

M92 E844                     ; E-Steps (833)
M206 Y7                      ; Set Home Offsets
M301 P28.79 I1.91 D108.51    ; Nozzle PID (P28.79 I1.91 D108.51)
M907 E135                    ; E0 Motor Current
M500                         ; Save Settings

Of course, the E-Steps and the Nozzle PID would be different. I actually have 3 single extruders with different nozzle diameters so there are three different printer profiles.

I also have an M175 V2 so there’s different command for that one:

M92 E415                     ; E-Steps (415)
M206 Y0                      ; Set Home Offsets
M301 P17.42 I1.22 D62.43     ; Nozzle PID (P24.54 I2.52 D61.75)
M907 E160                    ; E0 Motor Current
M500                         ; Save Settings

I have a couple other tool heads and have run PID tuning on all of them. I did this because the default PID values in (an older version of) the firmware turned out to prevent the M175 tool head from completing the start gcode.

3

Using Universal 2.0.9.0.13 with single stock 0.5mm extruder (not sure the version)

That is interesting. I have a bunch of 1.75mm filament and some of it I’ve been having trouble printing with so I was thinking of getting an m175 v2 extruder for those.

How did you figure out the PID values?

4

It’s simple enough, there’s a gcode command in Marlin to calculate it (the M301 command uses the results).

M303 E0 S205 C10 ; This will run autotune for extruder 1 (Extruder 1 is E0) at 205°C for a total of 10 iterations.

Here’s some additional information:

https://www.3dmakerengineering.com/blogs/3d-printing/pid-tuning-marlin-firmware.

I picked the temperature based on the filament I print most often, PLA. I guess I could tune again for PETG or ABS but I haven’t had problems at those higher temperatures in the past.

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5

Oh very nice! I had no idea this was a thing. Thank you!

6

I really like my M175. I bought the V1 and upgraded it to the V2.

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7

To shave a few seconds off the startup time, I change the post-probe code:

G1 X0 Y0 Z15 F5000 ; move up off last probe point
G4 S1 ; pause
M117 Heating... ; progress indicator message on LCD
M109 R{material_print_temperature_layer_0} ; wait for extruder to reach printing temp
M190 R{material_bed_temperature_layer_0} ; wait for bed to reach printing temp

Becomes:

G1 X0 Y0 Z15 F5000 ; move up off last probe point
M117 Heating... ; progress indicator message on LCD
M104 R{material_print_temperature_layer_0} ; begin heating hotend before pause and moving
M140 R{material_bed_temperatuer_layer_0} ; begin heating bed before pause and moving
G4 S1 ; pause
M109 R{material_print_temperature_layer_0} ; wait for extruder to reach printing temp
M190 R{material_bed_temperature_layer_0} ; wait for bed to reach printing temp
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