OrcaSlicer Calibration Guide: From Default to Dialed In
If you've ever loaded a default filament profile into OrcaSlicer and wondered why your benchy has stringing or your overhangs look rough, you're not alone. Default profiles are a starting point — a safe midpoint that works okay for most printers. Getting truly great prints means calibrating for your specific filament, printer, and environment.
This guide walks through OrcaSlicer's calibration workflow step by step, with the order mattering: each calibration builds on the previous one, so skipping around wastes time. I'll cover material-specific profiles for the four filaments I use most — PLA, PETG, TPU, and ASA — and touch on advanced configuration for when you want full control.
Why OrcaSlicer?
OrcaSlicer has become the go-to open-source slicer for good reason. It started as a Bambu Lab fork of PrusaSlicer but has grown into its own project with broad printer support: Bambu Lab, Anycubic, Prusa, Voron, Creality, and many more. It's actively maintained, the calibration tools are built-in rather than afterthoughts, and everything runs locally — no cloud dependency.
If you're coming from Cura or PrusaSlicer, the transition is smooth. The UI is familiar, the keyboard shortcuts are similar, and OrcaSlicer's calibration menu adds tools that those slicers require plugins or manual G-code for.
The Calibration Workflow (Order Matters)
Each calibration step determines a parameter that the next step depends on. Running them out of order means you'll invalidate earlier results when you change a later parameter.
1. Temperature Tower
The temperature tower establishes your base nozzle temperature range for a given filament. Print it first, because every other calibration depends on temperature.
In OrcaSlicer: Calibration → Temperature → Temperature Tower. The slicer generates G-code that changes temperature at each Z-height segment.
What to look for:
- Too hot: Stringing, blobs, shiny surface with poor detail
- Too cold: Dull surface, layer adhesion weakness, underextrusion
- Sweet spot: Clean bridges, sharp corners, no stringing
I usually run PLA at 205-215°C, PETG at 235-245°C, and TPU at 215-225°C as a starting range, then narrow it from the tower results.
Tip: Save your tower as a preset
Once you've identified the ideal temperature, save the result as a note in your filament profile. OrcaSlicer lets you add notes per filament — I write something like "PETG: 240°C sweet spot, Polymaker" so I don't have to re-tower every time.
2. Retraction Tower
With your temperature dialed in, retraction is next. Too little retraction causes stringing; too much causes clogs and grinding from filament being chewed up by the extruder gears.
In OrcaSlicer: Calibration → Retraction → Retraction Tower.