Step 14.8 — Set the chamber target and understand the soak¶
Step 8 of 36 · Chapter 14 — Calibration and tuning
(no image — see text)
Parts: none.
Do:
SET_IDLE_TIMEOUT TIMEOUT=7200before you set a temperature.- Bed 100–110 °C, panels on, Clicky-Clack door shut. Read
[temperature_sensor chamber_temp]in the web UI and wait up to 45 minutes from cold. - Put the settled value in the tuning log, then
SET_IDLE_TIMEOUT TIMEOUT=1800.
Check
With bed at 110 °C, panels on and door closed, chamber_temp has settled in the 50–60 °C accept band by 45 minutes.
What you're looking at
There is no chamber heater on this machine; the chamber is warmed by the bed and held there by the panels and the door. The toolboard sensor tells you how hot the enclosure gets; expect it settled by 45 minutes from cold.
Caution
The LDO config's 1800 s idle timeout turns the heaters and the Z motors off 30 minutes after the last move, and a static soak is exactly that. RESTART, FIRMWARE_RESTART and every SAVE_CONFIG put it back to 1800.
Caution
The chamber sensor is already wired to the Nitehawk on nhk:PB2, the toolboard's CT port; the config's T1 comment is a Leviathan-era label. Mainsail names it chamber_temp; its gcode_id in M105 output is chamber_th.
Caution
If the chamber stalls below 45 °C, first check the bed is still heating: targets that went to 0 by themselves mean the idle timeout fired. Then look for a missing panel, an open keystone blank, or the exhaust left open.
Tip
55–60 °C is the ideal end of that band, what the printed parts were designed for. A 350 with a 100–110 °C bed and closed panels gets there passively.
Source: Voron docs — materials · leviathan-printer-rev-d-sbv2.cfg · leviathan-printer-rev-d-sbv2.cfg · Klipper docs § SET_IDLE_TIMEOUT