Cura gcode start

[atooltoscream 0]

I have a 3d printer at home (M3D) and we just got an Airwolf HD2x where I work.

I use Cura for slicing and gcode creation in both cases, 15.04 for my printer and 15.04.3 for our work printer. My question is, why do my parts perform a gradual approach when a print starts? What I mean is, the print head will start along the path of the first bead but it will take anywhere from a few mm of travel to a few inches of travel before the print head is close enough to the surface to start laying down filament. So basically, my prints have a line of missing material.

Is there a setting in Cura that makes it behave this way?

Thank you so much

[nallath 1,117]

I'm not aware of any setting that could cause this. It could be an issue with how both printers handle G-codes differently from how Cura generates it.

[tinkergnome 926]

@atooltoscream

Sorry, but can you share some more informations?

- Which printer profile do you use within Cura?

- How does your start gcode looks like?

A short google search found this example profile for the Micro 3D

...and the Airwolf FAQ mentions a "recommended profile" for Cura "provided on the USB drive received with your printer"...

Have you tried this already?

Anyway... it's just my personal thought, but i assume the Cura developers can only make a guess about your printer(s). Perhaps the linked sites are a better place to ask...?

Edited December 8, 2015 by Guest

[atooltoscream 0]

@atooltoscream

Sorry, but can you share some more informations?

- Which printer profile do you use within Cura?

- How does your start gcode looks like?

A short google search found this example profile for the Micro 3D

...and the Airwolf FAQ mentions a "recommended profile" for Cura "provided on the USB drive received with your printer"...

Have you tried this already?

Anyway... it's just my personal thought, but i assume the Cura developers can only make a guess about your printer(s). Perhaps the linked sites are a better place to ask...?

 

Thanks for the response. For my M3D I'm using the example profile that you linked. For the Airwolf, I set Cura up per their instructions in the user manual. I loaded the ABS profile from the Airwolf USB drive and the only things I changed were certain parameters (fill, shells, etc.). I didn't change anything about the Start/End G-code.

My workaround so far has been to print everything with a raft or brim so the printer is laying down filament by the time it gets to the actual part. I'll paste the G-code start below:

M190 S115.000000

M109 S240.000000

;Sliced at: Mon 07-12-2015 16:49:52

;Basic settings: Layer height: 0.3 Walls: 1 Fill: 0

;Print time: 6 hours 49 minutes

;Filament used: 15.87m 125.0g

;Filament cost: None

;M190 S115 ;Uncomment to add your own bed temperature line

;M109 S240 ;Uncomment to add your own temperature line

G28

G90 ;absolute positioning

G21 ;metric values

M107 ;start with the fan off

G1 Z15.0 F9000 ;move the platform down 15mm

G92 E0 ;zero the extruded length

G1 F200 E3 ;extrude 3mm of feed stock

G92 E0 ;zero the extruded length again

G1 F9000

M42 P6 S255

;Put printing message on LCD screen

M117 HD Printing...