conditional Z-hop #2134

New Issue

MrUnknownDE · 2026-04-06T00:11:26+02:00

MrUnknownDE commented

2026-04-06 00:11:26 +02:00

Originally created by @discip on 9/19/2025

Is there an existing issue for this feature request?

I have searched the existing issues

When printing engineering materials like PC, it is best to disable Z-hop to reduce stringing.
However, sloped surfaces can cause upward curling, which, when combined with disabled Z-hop, may lead to failed prints due to parts being ripped off the heated bed during printing.

Which printers will be beneficial to this feature?

All

Describe the solution you'd like

While thinking about how to solve this issue, I came up with a feature idea that could improve such scenarios: making Z-hop conditional based on the material and the overhang ratio of individual perimeters — similar to how Conditional scarf joint works with the Conditional overhang threshold setting.

Describe alternatives you've considered

By adjusting Only lift Z above.

However, this method would need to be adjusted every single time throughout different parts.
Whereas a conditional Z-hop could be set for a specific filament, making this independent of the height of any part.

*Originally created by @discip on 9/19/2025* ### Is there an existing issue for this feature request? - [x] I have searched the existing issues ### Is your feature request related to a problem? When printing engineering materials like **PC**, it is best to disable Z-hop to reduce stringing. However, sloped surfaces can cause upward curling, which, when combined with disabled Z-hop, may lead to failed prints due to parts being ripped off the heated bed during printing. ### Which printers will be beneficial to this feature? All ### Describe the solution you'd like While thinking about how to solve this issue, I came up with a feature idea that could improve such scenarios: making **Z-hop** conditional based on the material and the overhang ratio of individual perimeters — similar to how **`Conditional scarf joint`** works with the **`Conditional overhang threshold`** setting. ### Describe alternatives you've considered * By adjusting **`Only lift Z above`**. However, this method would need to be adjusted every single time throughout different parts. Whereas a conditional Z-hop could be set for a specific filament, making this independent of the height of any part.

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1 Participants

Notifications

Due Date

No due date set.

Dependencies

No dependencies set.

Reference: github/OrcaSlicer#2134