Spiral vase combing

[stanhunnekens96]

At work we print a lot of stuff in spiral vase mode. Some of these items require both bottom and top to have a nice flat surface. When the spiral vase print reaches the top, it stops abruptly, leaving a height difference at the end point. This means we either have to make some adjustments after printing, or print without spiral vase mode, leaving a noticeable seam in the walls.

It would be nice if there was an option for combing in spiral vase mode, where the printer does one additional lap, staying at the same height but steadily decreasing extrusion until it reaches 0% at the end of its lap. I'm guessing this would be an exact inversion of the first lapp, where height and extrusion are steadily increased.

[neophyl]

Duplicate of #7932

[u89djt]

What version are you using? 2.8.0 already does this according to the preview. If your filament is oozing (wet or out of dimension) that could lead to a tag at the end.

[stanhunnekens96]

Earlier prints were sliced with previous versions of PrusaSlicer. Now I'm using version 2.8.0 but the problem still persists. So far I've never had problems with oozing filament. Slicer also shows no signs of levelling the top layer.

[u89djt]

Go ahead and post the 3mf project file (you need to zip it first) so I (and whoever else is here) can compare the environments that lead to what I'm seeing (no step) and what you're seeing (a step). Cheers!

[u89djt]

(When you do screenshots, include the whole screen so all the settings are visible.) Here's a screenshot of a vase sliced cylinder showing the whole height and the blended top in 2.8.1 (it was the same in 2.8.0 so you don't need to update until you're ready)

, and then with the layer slider shifted down. I only see a tag like yours in the middle of the print:

Here's the project file for that:
vase mode Shape-Cylinder.zip

[Jan-Soustruznik]

Hello, @stanhunnekens96 , could you share your 3MF file, please, Thank you

Go ahead and post the 3mf project file (you need to zip it first) so I (and whoever else is here) can compare the environments that lead to what I'm seeing (no step) and what you're seeing (a step). Cheers!

[stanhunnekens96]

E_Buitenkant.zip

[u89djt]

The step is at the bottom left corner of the "E"

[stanhunnekens96]

Indeed. I get the same result with your project file as in mine, still an abrupt ending. Using version 2.8.0.

[u89djt]

Right, that's important information. You're seeing a step in my file when I don't, however I am seeing a step in your file.
You'll see that the bug report guidance asks for version information on your operating system, too. What build of 2.8.0 are you using? Make sure you've posted everything the report framework askes for.

[stanhunnekens96]

Will this suffice?

[u89djt]

You could hit the "Copy to Clipboard" button and post that - neither of us knows whether that's relevant to this specific issue because it hasn't been diagnosed yet. I can't see how it would be, but it's available and easy.
The guidance asks for the printer model, too. Maybe someone else with that printer could have seen this problem.

[u89djt]

Observation: switching off both the brim and the skirt removes the step in yours.
Question: did you import my file as a project and hit slice, or did you import it as an object and go into vase mode?
Note: adding a brim/skirt to my file in my slicer doesn't cause a step to appear. That's in 2.8.1. They're not going to fix 2.8.0 so if you can try 2.8.1 that could potentially accelerate progress for you unless your settings also make it happen in 2.8.1 somehow. And we'd find that out by seeing the output of 2.8.1 from you.
I'm a doofus. Your settings cause a step in my 2.8.1, so that's covered. Didn't pan the thought out far enough. Although with the number of unknowns, it might reveal something if 2.8.1 doesn't step for you.
But you're in 2.8.0 and my file has a step for you, so the project/object and settings question is pertinent.

[u89djt]

RIght, found it. You need Use Relative E Distances ticked in the Printers General pane.

[stanhunnekens96]

That fixed it! Thank you for all your help!

[u89djt]

You're very welcome. In return; remember that following the submission framework could have saved you four weeks and @Jan-Soustruznik and me some effort.

[Jan-Soustruznik]

Closed as solved