The two G-codes used are ‘G28’ and ‘G1’. G28 homes the printer, and G1 move to a
specific X,Y,Z location. The aim of this calibration is to ensure that when Z=0, the
extruder nozzle is just above the print bed for as much of the print bed as possible.
As before, arrange the printer so that the off switch can be easily accessed if the
printer needs to be switched off quickly.
The small house symbol
to the bottom of the X/Y control is the home command,
so there is no need to set up a script for the home command.
Right click on the script 1 button
to open the script editing window.
In the large text box type G1 F5000 X0 Y0 and press OK. This is a command to move
the extruder so above the centre of the bed. The z-coordinate is unchanged. The F
parameter is the federate, or speed of movement, and is measured in mm per minute.
Edit the scripts as listed below:
Script 1
G1 F5000 X0 Y0
Centre of bed
Script 2
G1 F5000 X-50 Y-25 X tower
Script 3
G1 F5000 X50 Y-25
Y tower
Script 4
G1 F5000 X0 Y55
Z tower
