[Poor performance on overhangs]

Thanks for the advice, guys!

I tried to build the model from .stl with Cura, instead of using the gcode (preconfigured with temperature changes).

I used the following settings:

-"Normal" in quickprint, then sent preferences to advanced mode

Basic

-Layer height: 0.1mm

-Shell thickness: 0.8mm

-Bottom/Top thickness: 0.6mm

-Fill Density%: 20

-Print Speed: 50mm/s

-Support type: None

-Platform Adhesion type: Brim

Advanced

-Nozzle size: 0.4

-Initial layer thickness (mm): 0.3

-Initial layer line width (%): 100

-Cut off object bottom (mm): 0

-Dual extrusion overlap (mm): 0.15

-Travel speed (mm/s): 150

-Bottom layer speed (mm/s): 20

-Infill speed (mm/s): 40

-Bottom/Top speed (mm/s): 15

-Outer shell speed (mm/s): 25

-Inner shell speed (mm/s): 30

-Minimal layer cool time: 10s

Cooling fan: enabled

Here's the result (the partially finished one on the right):

 

It's a huge improvement - far fewer globs and smoother surfaces.

But I know ultimaker can do better than this.

Any ideas?

 

Thanks,

Josh

 

[Poor performance on overhangs]

Hi Ulti-makers!

I have been using my new Ultimaker 2 for a few weeks now.

I noticed that it performs poorly when printing overhangs.

To demonstrate the problem, I printed an Ultimaker 2 temperature test:

http://www.thingiverse.com/thing:696093

Compared to the two completed part photos on Thingaverse, mine looks like a mess:

 

 

The part was the "High quality print" with build plate set to 60C.

The print settings are already in the gcode file for that part, so I can't list them.

I am using the latest firmware, uploaded using cura just prior to this test.

The material was Ultimaker PLA (white).

I did an atomic method nozzle clean just prior to the print, and the PLA flowed vertically downwards on start.

I have never used ABS in this Ultimaker 2 - just white and blue Ultimaker PLA.

The same problem is visible in the small overhangs in the ultimaker robot (included on the SD card that shipped with Ultimaker 2):

Can anyone suggest what may be causing this problem?

Much appreciated!

Josh

 

[Top Layer weirdness]

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