when using a custom material my extruder won´t work

[properN00b 1]

Hi everyone!

 

First things first: I am working with an Ultimaker 2+, Cura 4.3.0 on Windows 10 and the recommended TinkerGnome Firmware on my printer.

 

This problem needs some help and I would be grateful if you could provide it. As mentioned in the title I recently added a new custom material to my Ultimaker 2+ via the export/edit .txt file/import from SD card method. The idea is to design a material which needs no heating up of either the nozzle or the print bed, as I plugged a selfmade syringe pump to the extruder 1 output in the process of converting the printer into a bioprinter for an university project.

Editing and importing the material worked just fine and when I am using the default materials the extruder works just fine as well. As soon as  I switch to the custom material though, the extruder stepper motor simply does not move a Millimeter. Here is the edited .txt file (I marked the custom part at the bottom orange) and the fist couple lines of the gcode:

 

.txt file

---------------------------------------------------------------------------------

 

[material]
name=PLA
temperature=210
temperature_0.40=210
retraction_length_0.40=6.50
retraction_speed_0.40=25.00
temperature_0.25=195
retraction_length_0.25=6.50
retraction_speed_0.25=25.00
temperature_0.60=230
retraction_length_0.60=6.50
retraction_speed_0.60=25.00
temperature_0.80=240
retraction_length_0.80=6.50
retraction_speed_0.80=25.00
temperature_1.00=240
retraction_length_1.00=6.50
retraction_speed_1.00=25.00
bed_temperature=60
fan_speed=100
flow=100
diameter=2.85
[material]
name=ABS
temperature=260
temperature_0.40=250
retraction_length_0.40=6.50
retraction_speed_0.40=25.00
temperature_0.25=245
retraction_length_0.25=6.50
retraction_speed_0.25=25.00
temperature_0.60=260
retraction_length_0.60=6.50
retraction_speed_0.60=25.00
temperature_0.80=260
retraction_length_0.80=6.50
retraction_speed_0.80=25.00
temperature_1.00=260
retraction_length_1.00=6.50
retraction_speed_1.00=25.00
bed_temperature=80
fan_speed=100
flow=107
diameter=2.85
[material]
name=CPE
temperature=250
temperature_0.40=250
retraction_length_0.40=6.50
retraction_speed_0.40=25.00
temperature_0.25=245
retraction_length_0.25=6.50
retraction_speed_0.25=25.00
temperature_0.60=260
retraction_length_0.60=6.50
retraction_speed_0.60=25.00
temperature_0.80=260
retraction_length_0.80=6.50
retraction_speed_0.80=25.00
temperature_1.00=260
retraction_length_1.00=6.50
retraction_speed_1.00=25.00
bed_temperature=70
fan_speed=100
flow=100
diameter=2.85
[material]
name=PC
temperature=260
temperature_0.40=260
retraction_length_0.40=6.50
retraction_speed_0.40=25.00
temperature_0.25=260
retraction_length_0.25=6.50
retraction_speed_0.25=25.00
temperature_0.60=260
retraction_length_0.60=6.50
retraction_speed_0.60=25.00
temperature_0.80=260
retraction_length_0.80=6.50
retraction_speed_0.80=25.00
temperature_1.00=260
retraction_length_1.00=6.50
retraction_speed_1.00=25.00
bed_temperature=110
fan_speed=100
flow=100
diameter=2.85
[material]
name=Nylon
temperature=250
temperature_0.40=250
retraction_length_0.40=6.50
retraction_speed_0.40=25.00
temperature_0.25=240
retraction_length_0.25=6.50
retraction_speed_0.25=25.00
temperature_0.60=255
retraction_length_0.60=6.50
retraction_speed_0.60=25.00
temperature_0.80=260
retraction_length_0.80=6.50
retraction_speed_0.80=25.00
temperature_1.00=260
retraction_length_1.00=6.50
retraction_speed_1.00=25.00
bed_temperature=60
fan_speed=100
flow=100
diameter=2.85
[material]
name=CPE+
temperature=260
temperature_0.40=260
retraction_length_0.40=6.50
retraction_speed_0.40=25.00
temperature_0.25=260
retraction_length_0.25=6.50
retraction_speed_0.25=25.00
temperature_0.60=260
retraction_length_0.60=6.50
retraction_speed_0.60=25.00
temperature_0.80=260
retraction_length_0.80=6.50
retraction_speed_0.80=25.00
temperature_1.00=260
retraction_length_1.00=6.50
retraction_speed_1.00=25.00
bed_temperature=110
fan_speed=100
flow=100
diameter=2.85
[material]
name=TPU 95A
temperature=235
temperature_0.40=235
retraction_length_0.40=10.00
retraction_speed_0.40=25.00
temperature_0.25=235
retraction_length_0.25=10.00
retraction_speed_0.25=25.00
temperature_0.60=235
retraction_length_0.60=10.00
retraction_speed_0.60=25.00
temperature_0.80=235
retraction_length_0.80=10.00
retraction_speed_0.80=25.00
temperature_1.00=235
retraction_length_1.00=10.00
retraction_speed_1.00=25.00
bed_temperature=70
fan_speed=100
flow=100
diameter=2.85
[material]
name=PP
temperature=220
temperature_0.40=220
retraction_length_0.40=8.00
retraction_speed_0.40=25.00
temperature_0.25=220
retraction_length_0.25=8.00
retraction_speed_0.25=25.00
temperature_0.60=230
retraction_length_0.60=8.00
retraction_speed_0.60=25.00
temperature_0.80=240
retraction_length_0.80=8.00
retraction_speed_0.80=25.00
temperature_1.00=240
retraction_length_1.00=8.00
retraction_speed_1.00=25.00
bed_temperature=100
fan_speed=100
flow=100
diameter=2.85
[material]
name=Hydrogel
temperature=35
temperature_0.40=25
retraction_length_0.40=8.00
retraction_speed_0.40=25.00
temperature_0.25=25
retraction_length_0.25=8.00
retraction_speed_0.25=25.00
temperature_0.60=25
retraction_length_0.60=8.00
retraction_speed_0.60=25.00
temperature_0.80=25
retraction_length_0.80=8.00
retraction_speed_0.80=25.00
temperature_1.00=35
retraction_length_1.00=8.00
retraction_speed_1.00=25.00
bed_temperature=25
fan_speed=0
flow=100
diameter=2.85

 

 

---------------------------------------------------------------------------------

G-CODE

---------------------------------------------------------------------------------

 

;FLAVOR:Marlin
;TIME:1059
;Filament used: 0.153787m
;Layer height: 0.1
;MINX:93.295
;MINY:93.289
;MINZ:0.27
;MAXX:129.717
;MAXY:129.712
;MAXZ:13.97
;Generated with Cura_SteamEngine 4.3.0
M140 S25
M105
M190 S25
M104 S25
M105
M109 S25
M82 ;absolute extrusion mode
G21 ;metric values
G90 ;absolute positioning
M82 ;set extruder to absolute mode
M107 ;start with the fan off
G28 Z0 ;move Z to bottom endstops
G28 X0 Y0 ;move X/Y to endstops
G1 X15 Y0 F4000 ;move X/Y to front of printer
G1 Z15.0 F9000 ;move the platform to 15mm
G92 E0 ;zero the extruded length
G1 F200 E10 ;extrude 10 mm of feed stock
G92 E0 ;zero the extruded length again
G1 F9000
;Put printing message on LCD screen
M117 Printing...
G92 E0
G92 E0
G1 F1500 E-6.5
;LAYER_COUNT:138
;LAYER:0
M107
G0 F3600 X98.628 Y98.624 Z0.27
;TYPE:SKIRT
G1 F1500 E0

 

----------------------------------------------------------------------------

 

I really don´  t know what to do about this. Maybe it is because the extruder won´  t extrude unless a certain temperature in the nozzle is reached? Anyway I am grateful for any tip!

cheers,
properN00b

[tinkergnome 927]

 

1 hour ago, properN00b said:

Maybe it is because the extruder won´  t extrude unless a certain temperature in the nozzle is reached?

 

Yes, but the minimum temperature can be changed:

 

 

[properN00b 1]

Thanks, this worked just fine! 

[properN00b 1]

Even though low temperature printing works great now, I did notice another issue. If I am trying to print with PLA (settings: nozzle 200°C, bed 60°C) only the bed is heating up and if I move the cursor on the nozzle temperature it shows something like 26°C / 0°C. There still is the obvious workaround of setting the nozzle temperature manually but I would be very happy if there´  s a way to solve this properly. @tinkergnome could you help me out once more?

[tinkergnome 927]

In short:

If you still use the "Marlin" flavor, check the start script and the temperatures in Cura.

Or you can show the first part of the generated gcode here (as above).

For gcode-flavor "Ultimaker": double check the selected material on the printer.

[properN00b 1]

As it turned out I simply wasn´  t patient enough. As soon as the buildplate is getting close to the desired temperature (about 2°C below) the nozzle starts heating up as well. This is also the point at which the endtemperature of the nozzle switches from 0°C to the desired 200°C. This is what caused the confusion on my behalf, as I did not expect the end temperature to change at any point. Thanks anyway for helping!