Step 2 of 9
PID Tuning
Tune your printer's PID values to stabilize hotend and bed temperatures for consistent results.
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Time
15â20 min
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Difficulty
Beginner
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Impact
Critical
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Why this matters: Without stable temperatures every other calibration becomes unreliable. A nozzle fluctuating by ¹10°C can completely invalidate Temperature Tower, Flow Rate and Pressure Advance results.
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Follow These StepsđĨ
Heat up
Preheat hotend to printing temperature and bed to printing temperature.
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Run PID Tuning
Use the commands on the right in your printer's console or terminal.
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Wait for completion
The printer will heat, stabilize and calculate the best PID values automatically.
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Save & verify
Run SAVE_CONFIG to write new values to printer.cfg.
â Pro Tip
Run PID after changing any thermal component, cooling fan setup, or enclosure configuration for best results.
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PID Commands°C
% fan
â ī¸ Fan must run at print speed during hotend PID â set to the same % you use when printing.
1. Enable part cooling fan at print speed
M106 S255; fan at 100% â same as during printing2. Run PID calibration
PID_CALIBRATE HEATER=extruder TARGET=220; takes ~5â10 minutes3. Save values
SAVE_CONFIG; writes new PID to printer.cfgâšī¸
Note: Replace TARGET=220 with your normal printing temperature. The process takes ~5â10 minutes.
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What to expect
The temperature should stabilize with minimal fluctuation (Âą1â2°C) around the target after PID tuning.
âCommon Mistakes
âRunning PID with part cooling fan enabled
âRunning PID in a cold room, then printing in an enclosure
âTuning only the nozzle and forgetting the bed
âUsing wrong target temperature (use your actual print temp)
âNot saving the new PID values after calibration
âNext Step
Temperature Tower
Dial in the best temperature for your filament after stabilizing PID.
Go to Temperature Tower â