Combine brims option (Prusa style brims) #720

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MrUnknownDE · 2026-04-05T16:27:20+02:00

MrUnknownDE commented

2026-04-05 16:27:20 +02:00

Originally created by @RF47 on 2/16/2026

Description

This PR refactors the brim generation to follow PrusaSlicer's methodology:

Stronger brims: The unified brim creates a continuous ring around all objects, providing better bed adhesion and stability

If more than one material is used on first layer, normal brim is recomended to avoid staining the parts with color.
If printer sequence is by object normal brim generation is maintained.

Screenshots/Recordings/Graphs

Before:

After (combine brims):

supports:

Print order:

Close #10635

*Originally created by @RF47 on 2/16/2026* # Description This PR refactors the brim generation to follow PrusaSlicer's methodology: Stronger brims: The unified brim creates a continuous ring around all objects, providing better bed adhesion and stability If more than one material is used on first layer, normal brim is recomended to avoid staining the parts with color. If printer sequence is by object normal brim generation is maintained. # Screenshots/Recordings/Graphs <img width="487" height="215" alt="image" src="https://github.com/user-attachments/assets/1cd7e485-8dd5-4a25-a087-702b46f6ed06" /> Before: <img width="1175" height="1096" alt="image" src="https://github.com/user-attachments/assets/5fd6448d-6f95-4f57-a414-cb1bb5290d95" /> After (combine brims): <img width="1200" height="1107" alt="image" src="https://github.com/user-attachments/assets/b63fc077-7534-4192-adaa-b0f2cfba3beb" /> supports: <img width="2560" height="1392" alt="image" src="https://github.com/user-attachments/assets/b62885cb-f75e-40c2-a4fb-fc31d9cac30b" /> Print order: <img width="2560" height="1392" alt="image" src="https://github.com/user-attachments/assets/a5bc21ad-80ff-496d-ae76-96a723fc5c27" /> Close #10635

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Reference: github/OrcaSlicer#720