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Contents HexCalibr3D print calibration suite

License and credits

HexCalibr is open: you may use, share and adapt the models, the guides and the code under the licenses below. What is reserved is the name.

Licenses

WhatLicense
Test models (3MF, STL) and their designsCreative Commons Attribution-ShareAlike 4.0 (CC BY-SA 4.0)
Guides, texts, photos and drawings on this siteCC BY-SA 4.0
Code: this site's generator and scriptsGNU GPL version 3 or later (GPL-3.0-or-later)
  • CC BY-SA 4.0 means you may share and adapt the models and texts, also commercially, as long as you give credit and share your changes under the same license.
  • Credit means: the name HexCalibr, the author (Matteo Beretta), a link back to the original page of the model or guide, the license, and a note if you changed anything.
  • The official downloads are the HexCalibr pages on Printables (coming soon), and this site is the official guide. Linking to them, rather than re-uploading the files, keeps everyone on the latest, corrected version.
  • Translations contributed to this site are published under the same CC BY-SA 4.0 license.

The name is reserved

  • The licenses cover the files, not the name. HexCalibr and its logo identify the official project and may not be used for modified versions or re-uploads, so that nobody mistakes them for the original.
  • If you publish an adapted version, give it a different name and say that it is based on HexCalibr, with a link. That is both allowed and welcome.

Not affiliated

  • HexCalibr is an independent project. It is not affiliated with, endorsed or sponsored by Prusa Research, Bambu Lab, Rat Rig, the OrcaSlicer project or any other manufacturer or software project named on this site.
  • PrusaSlicer, Prusa, Printables, Bambu Lab, Bambu Studio, Rat Rig, RatOS, OrcaSlicer, Klipper and other names are trademarks of their respective owners, used here only to say what the tests work with.
  • The tests are provided as they are, without warranty. Calibration prints change temperatures and speeds while printing: stay within your printer's limits.

Credits and sources

The test methods build on public work by others. The models, texts and photos here are original: no model, text or image has been copied from these sources. Read them: they go deeper than any single guide.

  • Ellis' Print Tuning Guide by Andrew Ellis: the one-variable-per-test approach, the order of filament tests, and the pattern methods for pressure advance and flow.
  • Klipper documentation: pressure advance, resonance compensation and rotation distance, and the G-code each firmware accepts.
  • OrcaSlicer wiki: the calibration sequence of its Calibration menu and how its temperature, flow and pressure advance tests are read.
  • CNC Kitchen by Stefan Hermann: why 20 mm calibration cubes mislead, and hotend flow-rate benchmarking.
  • Prusa Knowledge Base and the PrusaSlicer source code: how projects, per-layer G-code and pressure advance behave on Prusa printers.
  • RatOS: IDEX tool-offset tolerances and tool-change behaviour.

Translations

  • Italiano: Matteo Beretta