Where does this command come from?

Vertex 3D Printer Vertex - Printer software (repetier, slicer, ...)
1

Suddenly after a new installation of Repetier there is a new command in the start code after slicing looking like this:

;Generated with Cura_SteamEngine 15.01
; Default start code
G28 ; Home extruder
G1 Z15 F100
M107 ; Turn off fan
G90 ; Absolute positioning
M82 ; Extruder in absolute mode
M140 S80
; Activate all used extruder
M104 T0 S220
M106 S200
G92 E0 ; Reset extruder position
; Wait for all used extruders to reach temperature
M109 T0 S220
;Layer count: 289
;LAYER:0
[color=#FF0080]M107[/color]
G0 F10440 X76.100 Y72.750 Z0.200
;TYPE:SKIRT and so on

This is not in my default start code looking like this:

; Default start code
G28 ; Home extruder
G1 Z15 F{Z_TRAVEL_SPEED}
M107 ; Turn off fan
G90 ; Absolute positioning
M82 ; Extruder in absolute mode
M140 S80
; Activate all used extruder
M104 T0 S220
M106 S200
G92 E0 ; Reset extruder position
; Wait for all used extruders to reach temperature
{IF_EXT0}M109 T0 S{TEMP0}

Where does it come from and most important how can I get rid of it without manual edit after every slice ?

2

M107, fan off
here a link for gcode explanation

thingiverse-production-new.s3.a … tSheet.pdf

3

Thanks, but I know exactly what it means and how it works.
What I want to know is why does it suddenly show up in my sliced code ?
As the head line says “Where does this command come from” ? Not what does it mean.

4

Have you looked in the configuration for Cura?
At the top Print then G-codes --> Start G-code.

5

This is my startcode as presented in my initial question in this thread:

; Default start code
G28 ; Home extruder
G1 Z15 F{Z_TRAVEL_SPEED}
M107 ; Turn off fan
G90 ; Absolute positioning
M82 ; Extruder in absolute mode
M140 S80
; Activate all used extruder
M104 T0 S220
M106 S200
G92 E0 ; Reset extruder position
; Wait for all used extruders to reach temperature
{IF_EXT0}M109 T0 S{TEMP0}

The M107 command is not there but it must come from somewhere.

I run V1.6.1 of Repetier

6

Are the fans set to 0 in the filament tab?

7

No, between 50 to 100 %

8

Did you download Repetier from this location?
http://www.vertex3dprinter.eu/support/downloads

9

Actually I don’t think I did, I probably DL’d from the Repetier homepage.
Will it make a difference ?
Is Cura different in the two different sites ? Sounds strange to me.

10

The link I posted is for the K8400.
Once you download it you will want to make some changes
Retraction 3 or 4mm Retraction Speed 110mm Hotend temp 190C for PLA

I don’t know about the other one this is the only one I use.

11

Not sure I want to use Repetier 1.0.6 which is at the site you suggested instead of 1.6.1 which is avaliable at Repetiers home page.

12

Since no one answered the question yet afaik, its probably caused by a setting in the filament tab, “disable fan for the first x layers”. Set it to zero. Default is 3 layers.

13

I dont have such a setting under the filament tab.

1570y3b.jpg897×475

14

My bad, its a setting of Slic3r, not cura. In Cura, the closest thing is in the expert settings for cooling, ‘fan full on at height’. It will scale with height the fan speed linearly between zero and whatever you defined. Thats probably where it comes from. Im using cura GUI, so Im not entirely sure where it is in repetier/cura.
I have set this value to zero and if Im not mistaken, the fan is off during the warmup, but starts spinning when the print starts.