Your machine may have this problem

I’m Japanese and I’m writing this using a translation, so some parts may be difficult to understand.

The problem I have is that when I print cylindrical or spherical shapes with x1
I have a problem that when I print a cylindrical or spherical shape on x1, there is a bulge at the turn of the x-axis.
This absolutely happens in every position!
I contacted support and sent my machine to support

At first support said that this was a problem and that they would find the cause and take care of it as soon as possible.

But in the end they said that this happens to machines with stepper motors.

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Is that true?
How about with your machine?
Try printing something on a cylinder or sphere, on my machine.
No bulge on the y-axis, but a bulge on the x-axis!

After wasting a lot of material, I finally figured out that the only solution was to increase the speed tremendously, and the only time I printed in ridiculous mode on the normal setting of PLA, no bulge occurred.

I paid a lot of money to get beautiful surfaces at a fast speed!
What about other 3d printers such as prusa?
Any experience with different types of experience, even trivial ones, would be appreciated.
Please let me know.

Would you be able to provide a picture of the bulge you’re talking about? I’m not sure I know what it might be, unless maybe we’re talking about the z seam, which is way more obvious on cylinders and spheres since they don’t have a corner to align the seam on.

ok a allitle wait please

I hope this makes sense.
I was told that the problem had been solved, so I discarded the print with glossy filament, which is easy to understand.

Lines like this occur even on cylinders.

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What I ultimately want to know is.
It’s not so much how to solve this.
I would like to know how to solve this, rather than how to solve it.
If it is a pre-existing condition of x1c, I would consider prusa.
I also need to do some research on prusa.

I am also concerned that the x1c may have been so eager for speed that it increased the distance traveled per pulse, in a sense making it a machine that is not good at slow, careful printing.

Ok I see what you’re talking about. I haven’t noticed this before, but I’ll have to try it myself later to see if my X1C also does that. Is it more prominent as you slow down printing speeds?

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Could this be the seam or this something different. If you check the preview after slicing, use the line type chart, the seams should show up in white. If it’s the seam, there is a new technique called a scarf joint but Bambu Studio does not have it yet. Orca slicer 2.0 does but I have not tried it yet.

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I haven’t seen it on my X1C yet, it would have caught my eye for sure, I have printed both cylnders and organic shapes (round or half round). Maybe he can share the model here. Who knows where the problem is.

Best regards

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It is noticeable when printing is slowed down.
It also happens with the recommended settings of "pla

It’s not a seam, the printing speed on the outer edge is also set to be constant
the printing speed of the outer edge is also set to be constant.
The support could be belt stretch, or it could be the stepper motor.
I don’t remember it happening on my old 3d printer.
I don’t remember this happening with my old 3d printer.

共有することもできますが ただの円筒形でも発生するので そちらのほうが材料も時間も無駄にせずテストできますよ

Vielleicht kommt es auf die Druckeinstellungen an.

I just want to tell you again here.
that x1c is a good printer, not a bad one.
The prusa test model you just printed? RoboAlpaca, the one I just printed.
It printed wonderfully smooth, and I used the feature that automatically changes the z-pitch and smoothes them out - about 0.08-0.02 - and it looks great, with no weird z-lines. I printed without calibration, so there is a little bit of under-extrusion and some gaps.

I have tried various print settings to no avail.
And the output from support with the different x1c’s had the same problem.

Translation is handy!

No rafts are attached, and with external filaments in the pla default settings.
With the gold plate, this is an astounding 7 hours!

Not a seam.
I understand that the seam area will be swollen like this depending on the setting
But we have confirmed in the studio that this is not the position of the seam.

I went ahead and printed a cylinder and I do see a very slight bulge around 180 degrees from where the z seam is located similar to your picture. If I wasn’t specifically looking for it, I would never have noticed it.

I circled roughly where the bulge is located on the print and have an arrow noting where the z seam is located.

Honestly it’s acceptable quality for me, but I do believe you are correct with what you’ve found.

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At least a hint on how and what to search for.

Try printing a cylinder, around the point where the x-axis folds back.
Check to see if there is any sudden bulge in the middle.
It is easier to check if the seam is aligned with the y-axis.