Sounds like you want the holy grail of CAD, to thicken polysurfaces. No magic that I know of. Two recent similar threads:
Related topics
| Topic | Replies | Views | Activity | |
|---|---|---|---|---|
| Offset Brep | 18 | 387 | May 29, 2025 | |
| Offset the face of a brep | 7 | 126 | December 11, 2025 | |
| Polysurface offset | 27 | 463 | March 11, 2025 | |
| Variable Thickness for Surface Offset | 5 | 2404 | June 17, 2020 | |
| [solved] How to get offset of the boundaries of surface with hole | 13 | 6044 | October 21, 2025 |