Multiple seams on the same layer of a cylinder

Software Snapmaker Orca
1

Edit: Since I’m a new user (my U1 arrived less than a month ago…;)), I can’t upload more than 1 image per post, so the 2 other images (slicer screenshot + real life test result) will come hereunder.

Hi,

I’m losing my sanity trying to print a very thin (1 layer on most of the height) cylinder for a light diffuser.

The way it is designed in Fusion is very straightforward : 1 profile revolved around the center axis of the cylinder

Section analysis looks like this:

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image1822×1052 39.8 KB

Basically, the diffuser screws from the top in the lamp structure and is hollow at the bottom, with a ridge to keep the bulb high in the cylinder.

The thinnest sections are 0,6mm (0.023in) thick.

I then use utilities>make to export an STL file and import it into Snapmaker Orca.

I had all kind of issues like missing layers, no first layer, totally “carved” cylinders,…etc, but right now I managed to tune the settings to have it sliced mostly the way I want it, except for the seam:

My seam setting is “Aligned”, but for some reason, I have a second irregular looking seam on 4/5th of the height on one side, and this seam switches to the other side above the bulb ridge…

I already tested printing with 1 layer (full height of the printer) and it “kind of works”, but I still hope for a better quality and less obvious signs (on the external wall) of the internal structure, which is not optimal (+ I forgot the thread on that one…):

I’ll still run the print with the double seam to see what it actually looks like, but if anyone has experience printing that kind of painful objects, please help me out :wink:

Thanks in advance,

Stan

2

What it now looks like in the slicer:

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image1920×1038 315 KB

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and the result of the best test so far. the measured thickness of the thin wall is about 0,8mm (0.031in)

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image877×1160 163 KB

4

This might be a good time to use vase mode. It prints in a single continuous strand of filament, with the intent of making everything a single nozzle-width thick, and no visible seam.

I don’t know how to do that in Orca though.

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I tried that, but Vase sets the wall count to 1, infill to 0%, no top layer and some other settings, which completely messes up the thicker parts of the model…

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Maybe there’s a way to apply Vase mode only to parts of the model, but I don’t know if it’s possible and if so, I didn’t find how to do it…