What causes the mishaped point in the temperature calibration print?

I gather from the color white and the legend that it’s considered a seam? Is it really? Or is it something else not in the legend? And why are the dimensions so wrong?

If you uncheck “Seams” it should remove the white section from the preview. I think the seam point are enlarged so they are easily identified?

@JonRaymond

I must be blind, because I don’t see where I would “uncheck” seams:
Screenshot 2024-09-23 170050

In your first pic, look at the legend. On the right side are the checkboxes.

@EnoTheThracian @JonRaymond

Ah, yes, I wasn’t clear. I want them gone from what’s printed, not just from the preview. The preview is useful because it shows me what will be printed.

It’s not clear to me why it’s even there in the first place. It’s creating a deformity.

The seam can’t removed as it generates with each layer unless you print in vase mode.

I am afraid I am still misunderstanding the key question. With three unconnected pillars in a layer, you will always have at least one seam per tower. The only seamless FDM printing strategies I am aware of are non-planar printing (which quickly requires 5-axis machines) and vase mode (which only prints a single “tower”).
But being @NeverDie , you know that, so I am unfortunately still misunderstanding your question.

As everyone else is saying, you can’t remove them as they are a necessary side-effect of how FDM actually works.

A seam is the slightly bigger amount of filament that appears when starting a line and at the end as it needs to move away.

You can minimise them, although, in the place shown in your image, any benefits will be minimal.

If you use the Experimental feature Scarf joint seam.

You can find it in the Global settings palette. Within the Quality tab, look down the list until you find the Seam section and a bit further down to Scarf joint seam.

You can play with the choices available in the drop-down and the related options that appear when you enable it.

It is IMPORTANT to remember this is EXPERIMENTAL.

That said, I have it enabled with the value Contour and hole, leaving the other values as they are defaulted.

The purpose of this feature is to ramp up the amount of filament that is used at the start of lines and *ramp down as it comes to the end of a line.

That description should explain why the section of the model you are focusses on will not benefit as it requires a line of at least a few mm to provide any difference and potential benefit.

I guess it’s just a weird case then. I thought a seam was what filled the gap between two ends of an arc, or loop, or wall. In this case, though, at the top few layers of the point, it seems to be all seam and no arc, loop, or wall. I only see white there in the preview. No other color.

That’s what people were referring to when saying to uncheck “seams” in the preview legend. That will let you see the actual print moves. Seams are marked with basically a large white blob so they’re easier to spot (since they tend to create a visual artifact when printing, and you might want to know where they are to try to hide them). I suspect what you’re worried about is that those areas seem like they’re all seam, which is likely the slicer accommodating the fact that it’s barely printing anything at those layers, since the point is so small (small sharp points like that don’t tend to print well in general)

If you’re having a problem with what’s actually being printed, it might be worth posting a photo of the print and specifying what the actual problem with the printed part is.

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@JustinRoss

OK, thanks for clarifying.

Turning off seams in preview, it does give the impression that maybe the slicer skipped a layer…

but I have no official complaint in regards to that.

Reporting back:
I found the reason for the layer skipping. Evidently Orca Slicer didn’t like a layer height set at 0.156mm. The next pointy thing up was even worse, where it skipped two separate layers:


Seems to be the result of a rounding error of some kind. Setting layer height to 0.16mm, a more standard number, fixed it:

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