this post was submitted on 12 Dec 2023
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Weird vase mode bulging (midwest.social)
submitted 10 months ago by [email protected] to c/3dprinting
10 comments fedilink hide all child comments
 

Hey all, I just finished a run of Popandsicle's excellent vase mode ornaments and I noticed these weird bulges happening all over the prints. The last run in a different color was flawless so I'm not sure where to start. I couldn't find much on the issue with a bit of googling so I thought I'd check with you folks and see if you all had any insight.

I've calibrated my esteps and adjusted the resolution to be a bit easier on my printer (modified CR-10v2), and unfortunately my mainboard isn't capable of linear advance.

Filament is overture royal gold, layer width is 0.6, height is 0.2.

I appreciate the help!

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[–] [email protected] 6 points 10 months ago* (last edited 10 months ago) (3 children)

It looks like it's happening at about the area of steepest overhang and while going around a corner. Is it possible the bead of filament is not grabbing onto the previous layer and dragging/sagging?

Maybe try slowing down the print speed a bit and/or increasing fan speed.

[–] [email protected] 3 points 10 months ago* (last edited 10 months ago) (1 children)

It's definitely sagging, this happened as I was composing the OP:

That's the worst I've seen, usually it's like the original picture... Oh damn I just noticed it happens at the same layer heights every time.

Hmmm, so why would this filament give me trouble and not the other one? Or is this a z-axis issue or a slicer one?

[–] [email protected] 3 points 10 months ago

I second callcc's suggestions. I don't think it's a slicer or hardware issue, just optimizing your print parameters for the filament.

[–] callcc 2 points 10 months ago

I'd think it's the overhangs as well. Try reducing layer height or increasing extrusion width. The ratio of those determines the max overhang angle.

[–] [email protected] 1 points 10 months ago

Yeah, looking at the suggested print settings for vase mode makes me think I'll need to mess with the temp and speed. I kept them mostly the same as my non vase mode profile which is probably is the issue.

[–] Dkarma 3 points 10 months ago (1 children)

This is consistent across runs in the exact same spots.

I think it's either mechanical on your y axis hardware or you've got a corrupted slicer file somehow. are you converting these differently than other prints in the past?

[–] [email protected] 1 points 10 months ago (1 children)

I didn't do anything different slicer-wise, but I resliced the file with a higher temp and that seemed to solve the issue.

Then I checked the x gantry and found a ~2mm variance so I had to do that for the first time and now everything seems to be running great now lol.

[–] Dkarma 1 points 10 months ago

Nice catch. I thought it was probably mechanical.

[–] [email protected] 2 points 10 months ago

Looking at previous runs it seems that the imperfections are there as well, but more minimized:

[–] [email protected] 0 points 10 months ago

Your printer is moving too fast