I use custom gcode that simply goes to a specified coordinate at the first layer height and extrudes a blob that primes the extruder and grabs the crud off the nozzle.
This is in the printer profile under custom gcode in the "start Gcode" box
G28 ; home all axes
G1 Z2 F5000 ; lift nozzle
G1 X0 Y-148 Z[first_layer_height] F6000
G1 E10 F300 ; extrude a blob on the front edge of the bed to clean the nozzle
Edited 2 time(s). Last edit at 04/29/2020 08:33AM by the_digital_dentist.
Ultra MegaMax Dominator 3D printer: [
drmrehorst.blogspot.com]