minimum layer time issue

[Dconn88]

Is there an existing issue for this problem?

• [X] I have searched the existing issues

OrcaSlicer Version

2.1.1

Operating System (OS)

Windows

OS Version

Windows 10

Additional system information

No response

Printer

qidi X Max 3

How to reproduce

Use any STL that hits the minimum layer time for most of the layers and duplicate it so there are 2 of them on the build plate.

Actual results

total printing time is double compared to printing one object..

Expected results

Should only be slightly more time than printing one unit because a majority of the layers are limited by minimum layer time.

Project file & Debug log uploads

Dolby Atmos height speaker stands.zip

Checklist of files to include

• [ ] Log file
• [X] Project file

Anything else?

No response

[avogra]

From looking at your screenshots, I think the feature works as expected: If you look at the screenshots showing the speed, even the single part prints mostly at the maximum speed of 270 and is not limited by layer time. Only at the top ~30% it starts to slow down and the last 10% are printed really slow.

The screenshots with layer time are conceiving because they show seemingly the same shade of blue suggesting the same layer time. If you look at the scale, it becomes really difficult to read the actual layertime, because the darker blue is 6.3 / 6.8 s while the next shade of blue is already 33.7 / 62.4 s. So it is almost impossible to discriminate e.g. 7s or 14s layertime by the colors.

There is also a color mode to show layertime (log). Here you can much better differentiate those times and you should clearly see, that layer time doubles when you print two instead of one.

[xokahag]

Switch the display to "Layer Time (log)" and you can clearly see that only the top section has layer times of 6s, which is the minimum allowed according to the filament settings:

When duplicating the object only the very top of the print object gets printed slightly faster:

Most modern printers are limited by the maximum volumetric flow rate. Your filament has a max setting of 32mm³/s, which you pretty much archive when printing at 300mm/s, with your line width and layer height:

This issue can be closed.

[Dconn88]

@avogra @xokahag Thank you guys, I understand what you're both saying. I completely agree. I think the total print time is correct, and it's just very deceiving from the layer time colors from both the points you all brought up. It totally threw me off and hindsight I felt a little foolish about putting this post, however it does bring up a good point...the colors and time intervals are really the problem here. It would be nice if We could select what range of layer times we would like to color code. For instance it could give the whole rainbow of colors to only the layers below 30 seconds. That way each color would have a very small range of a couple seconds. Usually the only thing I'm looking at is short layer times to figure out cooling And also what my speed bottleneck is. We're trying to troubleshoot something about the print.

Thanks so much for your time guys. Let me know what you think about this idea. Most of the work and calculation is already done, and this tweak would allow the layer time color coding to be so much more useful!

[github-actions[bot]]

Orca bot: this issue is stale because it has been open for 90 days with no activity.

[github-actions[bot]]

Orca bot: This issue was closed because it has been inactive for 7 days since being marked as stale.