Choose the kind of problem

Every page type is a different diagnostic job.

Start with the kind of evidence you have: a visible failed part, an exact Klipper error, a material change, a calibration value, or a buy-or-wait decision.

Buy-or-wait checks Use when you are deciding whether a dryer, plate, nozzle, or maintenance part is justified. Run the proof test that would make buying unnecessary or clearly justified. 3 pages Setup choices Use when choosing between nozzle sizes, slicers, or materials before committing a profile. Compare on the same printer and material context, then test one representative part. 3 pages Material setup Use when one material, brand, color, or spool behaves differently from your baseline. Keep hardware unchanged and prove temperature, moisture, bed, cooling, or speed. 8 pages Klipper errors Use when the printer stopped with an exact console or klippy.log message. Copy the exact error and timestamp before rebooting, reflashing, or editing config. 8 pages Printer-specific paths Use when a Bambu, Ender, Voron, or other printer family changes the troubleshooting order. Start with the printer-specific maintenance, plate, firmware, or filament path clue. 7 pages Slicer calibration Use after hardware, filament condition, and first layer are stable. Run one calibration print and save the value with the material/nozzle/profile. 8 pages Visible print failures Use when the part itself shows strings, lift, blobs, shifts, clogs, weak flow, or first-layer trouble. Match the visual pattern and run the page's smallest STL before changing settings. 13 pages