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Z" can be negative with Remove Empty Layers #15975
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Thanks for the report. @MariMakes here is a project file. The "Z" is negative when the model is raised up off the build platform, "Generate Supports" is disabled, and "Remove Empty First Layers" is enabled. "G0 F9000 X98.5 Y103.121 Z-2.36" If "Remove Empty First Layers" is disabled then the first layer is "G0 F9000 X126.5 Y126.5 Z10.64" Adaptive Layers doesn't appear to have anything to do with this. |
This issue has been automatically closed because there has been no response to our request for more information from the original author. With only the information that is currently in the issue, we don't have enough information to take action. Please reach out if you have or find the answers we need so that we can investigate further. |
Quick update from our side 👋 I stumbled upon your issue and recall bringing it up to the team but cannot find the follow-up we've done on it. Apologies for the slow response. |
Apologies for the delayed response. We've added a ticket to the backlog with the intent to improve this. Thanks for the report! 👍 |
Issue has been resolved, validating with the project file @GregValiant provided (Thanks), the gcode shows: Fix will be part of the next release. Cheers! |
Application Version
5.3.1
Operating System
Windows 11
Printer
Anycubic Kobra MAx
Reproduction steps
On the first layer there will be the following gcode with negative Z axis height which will make the nozzle hit the print bed violently, destroying the head and the bed. A real example
;LAYER:0
M107
M204 S20000
M205 X10 Y10
G1 F1200Z-24.29
;MESH:crown.stl
G0 F2700 X204.921 Y203.733 Z-24.29 <============
Actual results
physical destruction of the nozzle and print bed
Expected results
Z axis of the first layer close to zero or with a positive value
Checklist of files to include
Additional information & file uploads
Configuration
![config](https://private-user-images.githubusercontent.com/43877837/250311615-0faeb71a-afb3-4ee2-8d50-4bc08e2aa453.png?jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.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.rulWnjew7P4wzZ2Let46Yo-udTmpPVII7rVDpf_9OfE)
![gcode](https://private-user-images.githubusercontent.com/43877837/250311625-c0ec88ac-7d68-4136-82e0-9883f7ac0856.png?jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.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.Z77yi6bAkZ5mN1FAar2EHwLy68VqA-JHqvO964p-jaE)
bugged gcode
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