Mesh bed leveling only in printing area using orca slicer

[RodrigoRMaraujo]

I've been researching how I could define the mesh for the print area using the orca slicer.

I'd like to record here how I did it, after reading some old posts here on the forum, which helped me a lot. Who knows, maybe it will be useful to someone else.

My start gcode in the orca slicer:

set global.varNozzleTemp = [nozzle_temperature_initial_layer]
set global.varBedTemp = [bed_temperature_initial_layer_single]

M557 X{first_layer_print_min[0]}:{first_layer_print_max[0]} Y{first_layer_print_min[1]}:{first_layer_print_max[1]} P3:3

M98 P"0:/macros/Print/start_print.g"

Macro start_print.g:

T0
M104 S150
M190 S{global.varBedTemp}                                                        ; aquece mesa e espera
G28
G32
M104 S{global.varNozzleTemp}                                                     ; aquece bico na temperatura de primeira camada e segue;
G29
M109 S{global.varNozzleTemp}                                                     ; aquece bico na temperatura de primeira camada e espera

;Purge line
G1 X115 Y-3 Z0.24 F6000
G1 E3
G1 X190 E30 F360
G1 X205 Z0.04 E-0.2 F180
G1 Z1 F360
G92 E0

Macro load_variables.g (loaded in config.g by M98):

global varNozzleTemp = 0
global varBedTemp = 0

It's a very simple process but it works well for me.

[jay_s_uk]

@RodrigoRMaraujo you could pass the nozzle and bed temp through to the macro using parameters. so something like

M98 P"0:/macros/Print/start_print.g" A[nozzle_temperature_initial_layer] B[bed_temperature_initial_layer_single]

then in your macro

T0
M104 S150
M190 S{param.B}                                                        ; aquece mesa e espera
G28
G32
M104 S{param.A}                                                     ; aquece bico na temperatura de primeira camada e segue;
G29
M109 S{param.A}                                                     ; aquece bico na temperatura de primeira camada e espera
 
;Purge line
G1 X115 Y-3 Z0.24 F6000
G1 E3
G1 X190 E30 F360
G1 X205 Z0.04 E-0.2 F180
G1 Z1 F360
G92 E0

[RodrigoRMaraujo]

@jay_s_uk
Yes, it's an interesting approach too, because it doesn't use memory by creating global variables.
Thanks for commenting.