2.2 KiB
Bed level
For this panel to appear in the menu [bed_screws] or [screws_tilt_adjust] need to be defined in Klipper config (printer.cfg)
!!! Important
* [bed_screws] uses nozzle positions (nozzle above the screw) Read Klipper doc entry
* [screws_tilt_adjust] uses probe positions (probe above the screw) Read Klipper doc entry
The corner buttons in KlipperScreen place the nozzle above the screw to do the "paper test".
When [screws_tilt_adjust] is defined a couple of things happen:
- A button named "Screws adjust" appears, it runs
SCREWS_TILT_CALCULATEwhen is pressed, and reports the amount to be adjusted into the labels of the corner buttons. [bed_screws]is now ignored by KlipperScreen. (explained below)- The corner buttons are now
[screws_tilt_adjust]coordinates with the probe offset applied. (explained below)
Why [bed_screws] are ignored/not used?
Because if the probe offset is changed or the difference between [bed_screws] and [screws_tilt_adjust] wasn't calculated correctly,
the "Screws adjust" button stops working.
Why the probe offset is applied to [screws_tilt_adjust]?
Because the corner buttons in KlipperScreen should place the nozzle above the screw to do the "paper test". It doesn't affect the function of SCREWS_TILT_CALCULATE, which will go to the defined positions.
Not supported for auto-detection
This message will appear if you are using 3 or 5 screws and didn't define them in KlipperScreen.conf. See "screw_positions" in the printer options
Limitations
The panel doesn't support more than 8 screws or screws that directly in the center of the bed.
Is there an alternative?
If you have a reliable probe, define [bed_mesh] in Klipper config, remove the springs
and use some thread-locker or locking nuts to fix the bed to the gantry, let the probe do a mesh save it and forget about this.