Reduce Orca weight: Resources to Draco #862

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MrUnknownDE · 2026-04-05T16:33:30+02:00

MrUnknownDE commented

2026-04-05 16:33:30 +02:00

Originally created by @ianalexis on 2/6/2026

Description

Transforming internal 3D Files to DRC to reduce orca size

Calibs

(Not counting temperature_tower)
Original 6,01 MB
Converted 1,57 MB

Mesh (STL/3MF) to LossLess DRC
- SCV-V2 116kb -> 15kb
- fast_tower_test 66kb -> 9kb
- ringing_tower 172kb -> 22kb
- pressure_advance_test 124kb -> 16kb
- tower_with_seam 2kb -> 1kb
- retraction_tower 1.726kb -> 97kb (done at 25, if 0 = 212kb)
- ~~temperature_tower~~ Updated, fixed, wider range and Draco in: #12103 5.075kb -> 485kb
- vfa 1.453kb -> 179kb
Step
- SpeedTestStructure 1.312kb -> 86kb
  - Imported:
    - Linear Deflection: 0.002
    - Angle Deflection: 0.25
  - Exported as LossLess DRC

Handy Models

Original 4,66 MB
Converted 1,53 MB

STL/3MF to LossLess DRC (Maybe reduce the bit depth???)
- 3DBenchy 2.417kb -> 570kb (done at 25, if 0 = 1.340kb)
- calicat 43kb -> 6kb
- ksr_fdmtest_v4 128kb -> 74kb
- Orca_stringhell 63kb -> 37kb
- OrcaToleranceTest 758kb -> 94kb
- Stanford_Bunny 755kb -> 187kb (done at 25, if 0 = 316kb)
- Voron_Design_Cube_v7 34kb -> 21kb

Bit used

After some test with a lot of models and all possible combinations it's safe to say that >20 is BondingBox and mm3 volume the best it can.
So i used 25 just as a safe value in:

Stanford_Bunny
3DBenchy
retraction_tower

MultiPart 3MF

Didint change them, too much trouble for small changes.

*Originally created by @ianalexis on 2/6/2026* # Description Transforming internal 3D Files to DRC to reduce orca size ## Calibs (Not counting temperature_tower) Original 6,01 MB Converted 1,57 MB - Mesh (STL/3MF) to LossLess DRC - SCV-V2 116kb -> 15kb - fast_tower_test 66kb -> 9kb - ringing_tower 172kb -> 22kb - pressure_advance_test 124kb -> 16kb - tower_with_seam 2kb -> 1kb - retraction_tower 1.726kb -> 97kb (done at 25, if 0 = 212kb) - ~~temperature_tower~~ Updated, fixed, wider range and Draco in: #12103 5.075kb -> 485kb - vfa 1.453kb -> 179kb - Step - SpeedTestStructure 1.312kb -> 86kb - Imported: - Linear Deflection: 0.002 - Angle Deflection: 0.25 - Exported as LossLess DRC ## Handy Models Original 4,66 MB Converted 1,53 MB - STL/3MF to LossLess DRC (Maybe reduce the bit depth???) - 3DBenchy 2.417kb -> 570kb (done at 25, if 0 = 1.340kb) - calicat 43kb -> 6kb - ksr_fdmtest_v4 128kb -> 74kb - Orca_stringhell 63kb -> 37kb - OrcaToleranceTest 758kb -> 94kb - Stanford_Bunny 755kb -> 187kb (done at 25, if 0 = 316kb) - Voron_Design_Cube_v7 34kb -> 21kb ## Bit used After some test with a lot of models and all possible combinations it's safe to say that >20 is BondingBox and mm3 volume the best it can. So i used 25 just as a safe value in: - Stanford_Bunny - 3DBenchy - retraction_tower <img width="324" height="499" alt="imagen" src="https://github.com/user-attachments/assets/bb5000cf-c1fa-4153-af2f-691ea59bc254" /> <img width="324" height="499" alt="imagen" src="https://github.com/user-attachments/assets/f38e3528-0d05-4621-984e-f107a0eec91e" /> ## MultiPart 3MF Didint change them, too much trouble for small changes.

MrUnknownDE closed this issue

2026-04-05 16:33:30 +02:00

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Reference: github/OrcaSlicer#862