What to calibrate

M104 S per segment — start high, step down

Segments — 5 × 10 mm → 50 mm tall

Start (°C)

Step (°C)

Segment height (mm)

Segments

Segment	Z range	Temperature
1	0.0–10.0 mm	220 °C
2	10.0–20.0 mm	215 °C
3	20.0–30.0 mm	210 °C
4	30.0–40.0 mm	205 °C
5	40.0–50.0 mm	200 °C

Printer & print settings

Nozzle temp (°C)

Bed temp (°C)

Fan (%)

Layer height (mm)

Line width (mm)

Perimeters

Print speed (mm/s)

Travel speed (mm/s)

Retraction (mm)

Retract speed (mm/s)

Z hop (mm)

Bed X (mm)

Bed Y (mm)

Filament dia (mm)

250Layers

26m 38sEst. print time

3.2 mFilament used

166 KBG-code size

Download temp-tower_220-to-200.gcode

Print the tower and compare segments — the best-looking one wins. Slice-generated comments mark each segment boundary.

About Temp Tower Generator

Pick what to calibrate — temperature, retraction distance or speed, flow rate, pressure advance (Marlin M900) or fan speed — set start value, step and segment count, and download a ready-to-print G-code tower.

The tower is a square ring plus center pillar, so every layer contains travels and retractions: stringing, gloss and extrusion quality differences between segments become visible. A segment map shows which Z range carries which value. Generated entirely in your browser.