Ch 1225 / 37
Step 12.25 — 350 mm: [stepper_z]¶
Step 25 of 37 · Chapter 12 — Software: Pi OS image, Klipper/Moonraker/Mainsail, firmware, printer.cfg
(no image — see text)
Parts: none.
Do: Uncomment the 350 line only. Z max is 330, not 350: the gantry cannot reach the last 20 mm.
position_endstop: -0.5
##--------------------------------------------------------------------
## Uncomment below for 250mm build
#position_max: 230
## Uncomment below for 300mm build
#position_max: 280
## Uncomment below for 350mm build
position_max: 330 # CHANGED — uncommented for 350
##--------------------------------------------------------------------
position_min: -5
homing_speed: 8
second_homing_speed: 3
homing_retract_dist: 3
Check
position_max: 330 is live; position_endstop: -0.5 is untouched, the placeholder Z_ENDSTOP_CALIBRATE overwrites in Ch 13 via SAVE_CONFIG.
What you're looking at
position_max is how high the gantry may be driven. It is 330 rather than 350 because the gantry runs out of frame before it runs out of nominal build volume. position_endstop here is a placeholder: Ch 13 measures the real value and SAVE_CONFIG writes it.
Source: leviathan-printer-rev-d-sbv2.cfg · Klipper docs § stepper