[Surface looks a lot worse in Cura 14.03]

I tested Cura 14.05-RC2 vs Slic3r.

 

Left Cura, right Slic3r.

As you can see, there are still a lot of blobs on the surface with Cura.

 

Cura has a user friendly interface and nice features (like slice preview and object rotating).

It's a pity the engine has these flaws.

 

[Surface looks a lot worse in Cura 14.03]

@Achim - to post a picture click "gallery" on the top left of this page, then click the blue upload button. When done uploading start a new post and click "my media" next to the smile face.

Only once per layer? Could that be when the Z axis moved? Are most of the "blobs" mostly on the same side of the object? If so it's probably the Z seam. Regardless what caused the hesitation blobs, you can improve those by printing slower because the difference in filament flow from moving to stopped is smaller so the blobs are smaller. In other words half speed will give you half sized blobs.

 

The image is now published.

The blobs are not a mechanical issue and it's not a Z-seam.

I have my prusa i2 for more then a year and my prints are oké when I'm using Slic3r.

I saw a video with David Braam and decided to give Cura a try.

Cura is very nice and works great, except this problem now.

I printed this pencil holder with the same printer and sliced with cura with perfect results. http://www.thingiverse.com/thing:291008

I also printed this 32 tooth gear sliced with cura on another printer (prusa i3) with the same blob problem.

http://www.thingiverse.com/thing:185912

 

[Surface looks a lot worse in Cura 14.03]

When I printed this object (http://www.thingiverse.com/thing:40635) from thingiverse I saw that when my printer was printing the outer shell, the head wasn't moving smooth. It hesitated for a moment on each layer.

The finished print shows a lot of blobs on the surface of the object.

 

I tested the 'TEST2' version from this threat and the results are better, but on some layers the head still hesitates and therefore there are still blobs on the surface of the objects.

 

edit by gr5: Made image link better.