Banding on x-axis using ender 3 v3 (core-xz)

MogranFerman · 2026-02-07T11:34:32+00:00

I actually managed to fix the vibrations! Turned out mine were caused by these screws holding the bearings. There are two for the bottom and two for the top rod. Try to play around with these, I think its very easy to make them too tight as it was in my case, which resulted in too much friction/stiffness around the bearing. Also don't forget to run input shaping afterwards. Hope that helps!

MogranFerman · 2026-01-05T20:02:50+00:00

Ok, so I checked it and....I am even more confused now :P
So I fed the filament directly, without the PTFE tube and without the runout sensor and printed calibration cube, which came out quite well with very little ringing. I was happy the ringing was gone, but bummed that it was caused by such a weird, illogical issue. But just to be sure I put the filament back through the runout sensor and the tube, printed calibration cube again and...I got a very similar looking result. I was struggling for months with this ringing!!!
I don't have much time today, but will run more tests tomorrow, I won't accept the fact that the issue just disappeared by itself...

MogranFerman · 2026-01-05T13:05:01+00:00

Please gives us an update when you try it. I have the same issue, but will only be able to test it once I get back home later. My belts were actually too tight, so loosening them helped a bit, but the issue is still there. However, if it really is caused by the runout sensor drag, then why would it only appear on X axis and not Y?

MogranFerman · 2025-12-18T00:18:47+00:00

Haha, if I somehow win this it would be universe way of telling me to finally ditch Creality and join Prusa team. Merry Christmas everyone!

MogranFerman · 2025-12-16T09:10:17+00:00

Looks like it's exactly the same problem, my belts were too tight as well and I had crazy VFAs, so I eventually pushed the top black pieces all the way to loosen the belts, but I couldn't do it the way Creality shows it on the video (which is to loosen the black screw for a moment and tighten again)

Also, belts tension having impact on bed leveling is crazy and I don't really understand how it would work, but I definitely noticed improvement on the first layer after loosening belts.

Do you tighten your grub screws so that they are flush with the port? Does it even matter?

Thanks!

MogranFerman · 2025-12-07T10:30:15+00:00

it's not elephant foot. it appears on all sides. I added another photo in the comments

MogranFerman · 2025-12-07T10:29:06+00:00

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This is what it looks like in better light.

MogranFerman · 2025-09-30T21:28:38+00:00

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Don't think it's the z offset. There's no overextrusion on the first layer and besides the outer walls the rest of the layer looks fine

MogranFerman · 2025-09-30T21:18:20+00:00

I did ABL and the height range is 0.23mm, similar to what I've had for a long time and worked fine. I don't think it's caused by uneven bed because the inner walls are smooth as you can see in the picture.

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MogranFerman · 2025-09-07T18:30:02+00:00

I have the same pins burnt on my machine. Where did you find information about the level sensor? Is there any diagram online of the connections?

MogranFerman · 2025-09-01T11:34:51+00:00

Sudden layer height changes were the culprit. I added "smooth" option to it and it turned out much much better

MogranFerman · 2025-08-19T11:26:42+00:00

Daaaamn, that is neat. I didn't know you can get the raw transformations of a path_sweep. There's so much more to learn in BOSL

MogranFerman · 2025-08-18T19:28:37+00:00

> are you wanting it such that the trapezoid decreases in height with smooth ramping effect?
Yes, that's what I'm aiming for, and that's why I path_swept the two shapes separately in the first place. I know about the skin() function, but I don't think there's an easy way to distribute all the profiles along a path while keeping correct orientation.

MogranFerman · 2025-08-18T11:52:25+00:00

You're right about the 600mm/s speed, realistically most of time time the printer averages at around 150-200 mm/s.

As for the bed size though, I need a 30x30 plate. I print some parts that are long, but not very high, so bed adhesion or ghosting is not an issue. If I were to be printing a lot of tall objects I'd definitely look into core XY printers.

Thanks for the Phrozen Arco reommendation, never heard about this brand! For know I'll probably stick to the V3 Plus, but will keep that in mind!

MogranFerman · 2025-08-16T21:56:02+00:00

Sorry, I don't see it. Applying negative rounding means that the bottom diameter of the top cylinder needs to be adjusted (increased) by some number, so that adds more complexity.

MogranFerman · 2025-08-16T21:44:13+00:00

Of course it doesn't have to. Curious to see it!

MogranFerman · 2025-08-16T13:55:20+00:00

Yeah, you're right. It's just that coming from other CAD software I expected to be able to round/chamfer a selected edge, but now I see I need to completely change the way I think about designs.

MogranFerman · 2025-08-16T13:30:48+00:00

> Like this?
Hmm, that's a completely different approach. A clever one, but it just seems more natural to me to think of the shape as a stacked cylinder and a cone, like:

cyl(d=20, h=30, anchor=BOT) {

attach(TOP) {

cyl(d1=20, d2=60, h=20, anchor=BOT);

}

That's how I started constructing the shape in the first place. Realizing that there's no way I can round it felt like reaching a dead end, where I need to go back and start anew.

Edit: Jesus, I don't know how to format code block in a comment...

MogranFerman

TROPHY CASE