Easy re-calibration after nozzle change

njjn2020

Hi!

i faced an issue of "too many steps" after i change nozzle.
because nozzles are different in size - each time it is changed i need to
re-calibrate whole system
10 steps "Measuring the trigger height"
than manually edit config-override.g

is there a faster way to do the change?

also i have seen some discussion on tool change but did not find solution there .

many thanks!

dc42

You could use a nozzle contact Z probe, either as the only Z probe or a separate one just for setting the height offset. One way of adding a separate one would be to use a switch just off the edge of the bed that the nozzle can push down on.

njjn2020

Well, i have created 3-step macro and it works. For convinience i created a folder called Nozzle change
I wonder, if it is possible to wait for an "anykey" within macros? than i can combine steps 2 and 3.

David, maybe this can be included in your factory settings in a separate folder.

Step 1

;=================================================
; 		Nozzle change macro 1/3
;=================================================
;source article 	https://duet3d.com/wiki/Calibrating_a_delta_printer

M561 			; disable mesh compensation
M208 S1 Z-3 		; temporarily allow Z moves down to Z=-3mm
M564 S0			; to allow movement lower than where the firmware thinks Z=0

M117 Please manually lower head to a paper height

Step 2

;=================================================
; 		Nozzle change macro 2/3
;=================================================

G92 Z0 		; define that height as Z=0
G1 Z15		; Command the nozzle up 15mm 

M117 Please attach Z-probe

Step 3

;=================================================
; 		Nozzle change macro 3/3
;=================================================

G30 S-1 		; probe the bed without resetting the Z=0 position
M500			; store results

M117 Complete

c310

nops. does not work. should i delete config-override.g ?

dc42

@njjn2020:

I wonder, if it is possible to wait for an "anykey" within macros? than i can combine steps 2 and 3.

I am about to add a very similar facility to RRF. It will require corresponding updates to DWC and PanelDueFirmware.