Top Layer weirdness

[trobok 0]

Hi Guys, after my firmware upgrade I am getting weird issues with the top layers. Notice the little spacing in areas like by the heart. It does it on both my ultimakers and does it with multiple materials. It used to print perfectly like the one in the image, now I cannot seem to find a fix.

Any suggestions?

 

 

[donmilne 2]

Hmm. It seems to me that the top layer is missing, and I'm seeing the shell and infill. Have you checks the bottom/top layer thickness?

 

[gr5 2,005]

You clearly sliced these 2 objects differently because I can see the diagonal infill is along a different angle. Do you still have the original gcode for the "good" one?

Cura saves all settings in the gcode file on the last line of the file (encoded). You can reload an old slicing profile in cura by going to "file" "load profile from gcode". I would try that and reslice.

I'm thinking maybe your infill is further apart or maybe because of the rotation of the part on the bed the infill lines aren't supporting the top layer as well. Or maybe you have thinner layers (say .05mm instead of .1mm) and the "threads" of filament are breaking.

 

[trobok 0]

Yeah This one was sliced differently, but I had tried the same gcode as previous with same outcome. WIll keep checking it out, thanks!

 

[jsanders 0]

I have a similar problem - prints seem to be missing the top layer.

I've only been using Ultimaker for about 24 hours, so I never knew the old firmware.

Here is a design I tried to print (rendered in Sketchup):

http://umforum.ultimaker.com/index.php?/gallery/image/13840-mousepoke-interfaceboardmount/

And here is a photo of the printout:

http://umforum.ultimaker.com/index.php?/gallery/image/13839-dsc01946/

Note the seam between the shell and the infill, which in some places shows as a crack...

My settings:

Printer: Ultimaker 2

Material: White Ultimaker PLA

Extruder temp: 215C (I had uneven extrusion issues at 210 requiring many atomic method clearings... 215 seems better)

Layer height: 0.06mm

Shell thickness: 1.2mm

Bottom/top thickness: 0.8mm

Fill density: 15%

Speed: 50mm/s

Support type: None

Platform adhesion type: Brim

All the advanced settings in Cura are at their defaults.

Any advice would be helpful.

Thanks!

Josh

 

[donmilne 2]

Have you actually checked the firmware version, or at least made sure it's up to date?