OrcaSlicer Deep Dive: Every Setting Explained

Why OrcaSlicer? OrcaSlicer is a fork of Bambu Studio and BambuSlicer, which itself is based on PrusaSlicer/Slic3r. It adds one critical thing the others don't have: a comprehensive calibration workflow built directly into the application. It also supports virtually every FDM printer via community-maintained profiles. Download: github.com/SoftFever/OrcaSlicer -- Profile Structure OrcaSlicer has three profile layers that combine into your final sliced output: Printer Profile: defines your machine — bed size, travel speed, firmware type (Marlin, Klipper, RepRapFirmware), bed temperature limits. Filament Profile: defines your material — temperatures, retraction, cooling, pressure advance value. One profile per filament roll (or at least per material type). Process Profile: defines print quality parameters — layer height, infill density, supports, speeds. One profile per quality level (Draft/Standard/Quality). When you slice, these three combine. Change one without affecting the others. -- Quality / Process Settings Layer Height Layer height: the primary quality vs speed tradeoff. 0.2mm = standard. 0.1mm = detail. 0.3mm = fast/structural. First layer height: usually 0.2mm regardless of layer height. Thicker first layer compensates for bed variation. Variable layer height: right-click a model → Variable Layer Height. OrcaSlicer can automatically thin layers in detailed areas and thicken in simple areas. Walls and Shells Outer wall count: increases strength and waterproofness. 2-3 is standard. 4+ for mechanical parts. Wall order: inner walls before outer walls by default. Outer-first gives slightly better dimensional accuracy. Seam position: where each layer's start point is. Aligned = visible seam line (use for invisible inside). Random = speckled (less visible overall). Sharpest corner = hides seam in geometry. Top and Bottom Shells Top shell layers: how many solid layers cap the top. 4-5 is standard. More = stronger top, better looking, more time. Bottom shell layers: same for bottom. Usually matches top. Top surface pattern: monotonic, lines, or Hilbert curve. Monotonic is the most consistent-looking. Fill gap between infill: when infill doesn't quite reach walls, this fills tiny gaps. Infill Density: 15% for decorative, 40% for functional, 80%+ for max strength. Pattern: Gyroid = strongest in all 3 axes. Grid = fast. Honeycomb = good strength-to-material. Cubic = good compromise. Lightning = minimum material for support-only infill. Infill/wall overlap: how much infill overlaps into the perimeter — increases bonding. 25% default. Speed Print speed: overall speed. OrcaSlicer handles wall speeds separately from infill. Outer wall speed: typically 50% of print speed. Slow = better quality. Inner wall speed: 75% of print speed. Infill speed: 100% of print speed — quality matters less inside. Travel speed: how fast non-printing moves happen. 200-300mm/s is typical. Acceleration Print acceleration: default is usually tuned for your printer profile. Higher = faster prints but more ringing artifacts. Input shaping (IS): enabled on Klipper machines. Eliminates ringing at high accelerations. OrcaSlicer can read resonance compensation values directly from Klipper. -- Support Settings Enable auto supports: OrcaSlicer detects overhangs and adds support automatically. Support type: Normal (traditional grid) or Tree (organic, easier removal). Support threshold angle: 45° default. Lower = more support generated. Support Z distance: gap between support top and model bottom. 0.2mm for PLA, 0.3mm for PETG. Support interface layers: dense layers between support and part. 2-3 top interface layers. Interface pattern: grid or solid. Support painting: right-click model → Paint Supports. Manual control over exact support locations. -- Calibration Workflow (The OrcaSlicer Killer Feature) Calibration → Flow Rate: corrects for over/under extrusion. Run once per filament type. Calibration → Pressure Advance: finds correct PA value for sharp corners. Run once per filament. Calibration → Temperature Tower: finds optimal print temperature for a filament. Run once per new filament brand. Calibration → Retraction: finds minimum retraction for no stringing. Calibration → Tolerance Test: prints a tolerance calibration cube to verify dimensional accuracy. Run these in order when starting with a new filament. Save the values to your filament profile. -- Multi-Color / Multi-Material OrcaSlicer supports Bambu AMS, Prusa MMU, Enraged Rabbit Carrot Feeder, and similar multi-material systems. Right-click model → Split to Parts: separates a single STL into color regions Paint on model: assigns colors to surfaces by painting them directly on the 3D model Purge tower: manages filament purging between color changes. Size it appropriately for the color transition (dark to light requires more purge than light to dark). -- Network Printing OrcaSlicer connects directly to: Bambu Lab printers via LAN or cloud OctoPrint (any printer with an OctoPrint server) Klipper/Fluidd/Mainsail via Moonraker API Configure in Printer Settings → Connection. Once configured, click Print and the file sends directly to the printer without a USB drive.

Related Guides

Loading_