OrcaSlicer — The Complete Guide: Free 3D Print Preparation With Built-In Calibration
OrcaSlicer is an open-source slicer (AGPLv3) that grew out of Bambu Studio and PrusaSlicer. It turns an STL or 3MF model into printing instructions, and has become popular for calibration tools that save a lot of trial and error.
OrcaSlicer
OrcaSlicer Project
A slicer with built-in calibration tests — for precise printer tuning.
Get it from the vendorWhat you get
- Ready profiles — Bambu Lab, Prusa, Creality, Voron and more.
- Built-in calibration — temperature towers, flow tests, pressure advance and retraction.
- Tree supports — supports that are easy to remove from complex parts.
- Per-region control — different settings for different areas of the same model.
- Network sending — connecting to printers running Klipper, OctoPrint or Bambu firmware.
Tip for engineering parts
For load-bearing parts, add walls before raising infill percentage, and orient the layers so the load does not act perpendicular to them — that is where the part is weakest.
Related tools
For Prusa’s slicer — PrusaSlicer. For the long-standing alternative — UltiMaker Cura. For designing the part — FreeCAD.
PrusaSlicer
Prusa Research
Turns a 3D model into printable G-code, with full parameter control.
Get it from the vendorUltiMaker Cura
UltiMaker
The most widely used slicer — ready profiles for almost any printer.
Get it from the vendor
FreeCAD
FreeCAD Project
Open-source parametric 3D modeller with workbenches for solid modelling, FEM, drafting and BIM.
Get it from the vendor
MeshLab
ISTI — CNR
Mesh and point cloud processing — hole filling, simplification, alignment and format conversion.
Get it from the vendorThe bottom line
OrcaSlicer suits anyone who wants accurate prints quickly, with calibration tools that are usually found only in plugins.