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wallan

Surface looks a lot worse in Cura 14.03

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I'm mainly printing models made in zBrush.

In the 14.03 version surface looks a lot worse than in previous versions.

At least at the same speed.

In order to get a surface quality from 14.03 that I have in 14.01 or 13.12 i can only print at about 25-50% of the speed compared to the other versions.

The two images below shows an area of about 15x15mm.

The black dot is only to get the camera something to focus on.

Layer 0.1

Shell 0.8

Speed 50

Here is what the surface looks like in 14.01

14_01.jpg

And 14.03

14_03.jpg

Here is also a picture showing a print where the lower 1/3 is printed at 50% speed compared to the upper 2/3 that was printed at 100% speed (50mm/sec).

IMG_8876.jpg

 

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I'm not sure if it helps, but:

Have you ever tried while printing the "material flow" directly on the machine in "TUNE" to adjust?

I know this is not the right way to permanently solve problems. But it would be very interested if you so will achieve a visible improvement.

And the problem is certainly not the material currently used, or other mechanical problems?

Markus

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I'm far, far from an expert on the software/firmware so this is just me thinking out loud. I believe daid (the creator of cura) mentioned a little while back that he had increased the resolution of the output in the latest version. Could it be that the Arduino is now being taxed too hard due to the increase in moves it has to plan and execute and not able to quite keep up, thus causing "micro stuttering"?

 

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I'm not sure if it helps, but:Have you ever tried while printing the "material flow" directly on the machine in "TUNE" to adjust?

 

Yeah, that's what i did to figure out that lowering speed helps.

Also tried higher temperarure in the upper 1/3, 240deg i think but that made no difference.

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1+

I have some similar problems with highres models.

Since the upgrade to 14.03

think the gcode calculation of round shapes has been changed.

Its regular and not that strongly visible on my machine.. compared to Wallans pics. it looks a bit like a fine layer of dragonscales.

Compared to 14.01 i notice a quite strong noise change when printing said round shapes.

Its slower, much louder and seems to studder a bit. at least i think i remember it printing faster there..

This happens only when i print mega-highres models... which i do alot. :)

 

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How does 14.03 compare to 14.03-TEST from http://software.ultimaker.com/Cura_closed_beta/ ? I changed a few things related to this in the TEST.

 

I can do a testprint but witch of the testversions are you talking about. There is both a Test1 and a Test2.

One of the prints posted by PeggyB seems to be the test1 version if that's the one you want to compare.

 

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I can do a testprint but witch of the testversions are you talking about. There is both a Test1 and a Test2.

One of the prints posted by PeggyB seems to be the test1 version if that's the one you want to compare.

 

More reports is always better.

Test1 and Test2 are equal for these goals (they differ on an point unrelated to Ultimakers)

 

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