Lightning Sparse Infill Density Value is Not Being Used for Cut Object

[myokeeh]

Is there an existing issue for this problem?

• I have searched the existing issues

CrealityPrint Version

7.0.1.4212

Operating System (OS)

Windows

OS Version

Windows 11

Additional system information

No response

Printer

K2 Plus Combo

How to reproduce

1. Load the Bug Repro project 3mf.

2. Slice the object.

3. Preview the sliced model at about layer 21.

4. Note the infill is like the expected result.

5. Optionally, you can change the sparse infill density to something other than 15% and it will reflect in the sliced model.

6. Cut object at Z 14 and make sure "Cut to parts" is selected.

7. Select the top portion of the model and change the Sparse infill density to 5%.

8. Check AI infill and it will select Grid pattern.

9. Select the bottom portion of the model and note that the Sparse infill pattern has changed to CrossHatch. I'm not sure if that is a bug on its own also, but not the focus of this bug report.

10. Make sure the Sparse infill density is 15% and Sparse infill pattern is Lightning.

11. Slice the model

Actual results

Note that the infill density is not what is expected for 15%. It appears to be using 5%. This is unexpected and suspected to be a bug.

Infill looks like it's 5% instead of the expected 15%:

You can also change the infill density value to some other value, but the end result will still be like what's shown above.

I haven't tried every pattern but it seems to be specific to Lightning pattern. Switching to a different pattern like CrossHatch seems to work.

Expected results

Expected infill at 15% Lightning:

Project file & Debug log uploads

Bug Repro.zip

debug_Fri_Feb_06_18_19_03_49120.log.zip

Checklist of files to include

• Log file
• Project file

Anything else?

No response