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Calibration & Print Tuning

Test prints, calibration generators, and tuning guides for FDM and resin.

Once your slicer (see FDM Slicers / Resin Slicers) is installed, calibration is the difference between a "works fine" printer and a "look at that surface finish" printer. The 2026 norm is OrcaSlicer's built-in calibration suite plus a small set of community tests; PA, flow, and max-volumetric-speed are the high-leverage ones.

Slicer-integrated calibration suites

  • ★ OrcaSlicer Calibration menu — pressure advance, flow ratio, temperature towers, max-volumetric-speed, retraction, VFA, input-shaping (when paired with an accelerometer). One-click generators inside the slicer; the default 2026 starting point.
  • ★ Bambu Studio Calibration — flow dynamics + flow rate + max-volumetric-speed; less full than OrcaSlicer but covers the essentials. Integrated with Bambu's automatic flow tuning on stock printers.
  • PrusaSlicer linear-advance / temp-tower add-ons — Prusa published gcode/3MF testing kits; less integrated than Orca but well-documented.
  • Cura calibration plugins — Marketplace plugins for tower generators, retraction tests, etc.

Klipper-specific tuning

  • ★ Klipper input shaper — SHAPER_CALIBRATE with an ADXL345 / Beacon / Cartographer accelerometer. The single biggest quality win on a fast Klipper printer.
  • Klipper pressure advance test — TUNING_TOWER macro generates a gradient PA test in one print.
  • Resonance plotting tools — calibrate_shaper.py outputs PNG resonance graphs.
  • Cartographer / Beacon scan calibration — bed mesh + Z-offset calibration via contactless probes.

Calibration models & test prints

  • ★ Ellis' Print Tuning Guide — the canonical reference for FDM calibration order; not a tool but the document everyone links to.
  • CHEP / Filament Friday calibration cube — 20mm cube, dimensional accuracy.
  • 3DBenchy — the famous boat torture-test; good visual benchmark, not a real calibration.
  • All In One 3D Printer Test (Voron design test) — single print covers bridging, overhangs, surface, dimensional.
  • Voron cube — gold-standard tolerance test for high-end machines.
  • Temperature tower / retraction tower / PA tower STLs — community staples on Printables and MakerWorld.

Resin-specific calibration

  • ★ Cones of Calibration (Validation Matrix / Tableflip) — the standard exposure-time matrix.
  • ★ UVtools' built-in exposure-finder — pixel-grid exposure tester, generated in a click. See Resin Slicers.
  • Resin XP2 — community exposure test bundled in Lychee/ChiTuBox.
  • Ameralabs Town — small-feature & overhang test.
  • AmeraLabs RERF — Resin Exposure Range Finder for Phrozen / Anycubic native firmwares.

Calibration model generators

  • Calibration Shapes (PrusaSlicer/OrcaSlicer built-in) — standard test STLs ship with the slicer.
  • TeachingTech calibration site (teachingtechyt.github.io/calibration.html) — interactive web generator; pick what you want and download the STL.
  • K-factor / linear-advance generator — Marlin's online generator at marlinfw.org/tools/lin_advance/k-factor.html.
  • Flow-rate calibration cubes — Ellis and CNC Kitchen both publish models; OrcaSlicer's built-in version is now equivalent.

Bed leveling / Z-offset

  • BLTouch / CR-Touch / Beacon / Cartographer / Eddy — probe hardware; Klipper and Marlin both support them.
  • Klicky / Tap probe — open-source nozzle-as-probe designs (Voron community).
  • Mesh visualizer (Mainsail / Fluidd) — built-in bed-mesh heatmaps.
  • First-layer-squish gauge prints — single-layer test patches; many on Printables.

Tuning references / guides (not tools)

  • Ellis' Print Tuning Guide (ellis3dp.com/Print-Tuning-Guide/) — the definitive FDM tuning order.
  • Voron documentation — assembly + tuning guides, applicable to non-Voron Klipper builds.
  • CNC Kitchen (Stefan Hermann) — YouTube + writeups; high-quality test methodology.
  • Maker's Muse / Teaching Tech / 3D Printing Nerd / CHEP — calibration-heavy YouTube channels.

Pick this if…

  • Default starting point in 2026: OrcaSlicer's built-in calibration menu, in Ellis' recommended order.
  • Klipper printer with accelerometer: input shaper first, then PA, flow, max-volumetric-speed.
  • Resin printer, never calibrated exposure: UVtools exposure-finder or Cones of Calibration.
  • Chasing the last 5% of dimensional accuracy: Voron cube + flow + PA + linear-advance fine-tune.
  • You want one document to follow start-to-finish: Ellis' Print Tuning Guide.

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