Much of this guide is specific to printers running Klipper.

This guide was originally written for the Voron community, however all of the tuning sections should work on any Klipper printer. Some notes and hardware troubleshooting tips are still Voron specific, however.

• My SuperSlicer profiles are located 📄here.

• If you have issues, comments, or suggestions about the guide, please let me know on GitHub issues or via Discord: 📄Ellis#4980

  • For issues not directly related to the guide content itself, or for troubleshooting & print help, please use the public help channels in the 📄Voron Discord (or the appropriate community for your printer).
  • I can't be everyone's personal troubleshooting assistant - there are lots of people hanging out in the public channels who can help!

• You can find bed the models and textures I am using in 📄Hartk's GitHub repo. The bed texture I am using is an older one from him in 📄VoronUsers.

• Thank you to bythorsthunder for help with testing these methods and providing some of the photos.

• Support my drinking habits:

• ⚠️ = ❗Please pay extra attention to items marked with this.❗

• 📄 = Link to another page.

• 📌 = Jump to section (on same page).

• Before We Begin

  • ⚠️ Important Checks

• A Note About Line Width

• Setting Expectations

• Print Tuning
  Essentials. Read/follow these in order shown.

  • Build Surface Adhesion
  • First Layer Squish
  • Pressure Advance
    • Lines Method
    • Tower Method
    • Fine-Tuning and What to Look For
  • Extrusion Multiplier
    • Background
    • Methods I'm Not a Fan Of
    • Method
  • PA / EM Oddities
    • Slight Perimeter Gapping
    • Slight Corner Gapping
  • Cooling and Layer Times
    • Signs of Overheating
    • How to Fix It
  • Retraction
  • Infill/Perimeter Overlap

• Printer Tuning
  Mostly optional. For pushing limits, or for troubleshooting.
  "Voron V2 Gantry Squaring" is the only essential.

  • Determining Maximum Volumetric Flow Rate
    • Why?
    • Approximate Values
    • How Volumetric Flow Rate Relates to Print Speed
    • Formulas
    • Method
    • Theory vs Reality
  • Determining Motor Currents
    • Determining Initial run_current
    • Determining Maximum run_current
    • Determining hold_current
  • Determining Maximum Speeds and Accelerations
    • Method
    • Usage of the TEST_SPEED Macro
  • Voron V2 Gantry Squaring

• Miscellaneous

  • Passing Slicer Variables to PRINT_START
  • Controlling Slicer G-code Order Without Passing Variables

• Troubleshooting
  Even without issues, it's worth looking through some of these to familiarize yourself with things to look out for.

  • BMG Clockwork Backlash Issues (Repeating Patterns / "Wood Grain")
  • Bulging
    • Bulging Layers
    • Bulges at STL Vertices
    • Bulging Patterns on Overhangs (SS)
  • Crimps
  • Error: "Command Format Mismatch"
  • Extruder Skipping
  • First Layer / Squish Consistency Issues
    • Thermal Drift
    • First Layer Conistency
    • Squish Consistency (Between Prints)
  • Layer Shifting
    • Mechanical
    • Speeds and Accelerations
    • Electrical
  • PLA is Overheating
  • Pockmarks
  • VFAs (Vertical Fine Artifacts)
    • Repeating VFAs With ~2mm Spacing
    • Repeating VFAs With Non-2mm Spacing
  • Slicer is Putting Heating G-codes in the Wrong Place/Order
  • Small Infill Areas Look Overextruded