Hi all
i have two problems and i do not get an answer on google
1.
before start of print i use this start G code
G1 Z10 F5000 ; lift nozzle
G28 ; home all axes
G29
G1 Z10 F5000 ; lift nozzle
G28 X0
then the Z lowers to 0.2
after that it goes to pint the skirt ...etc
i want if it is possible not to edit the code manual every time
Run the start G code
get to Z 10
go to the start position of the skirt
lower the Z to 0.2
2.
every time at the end of print i want the extruder to retract 20mm
every time at the start of the program i want the extruder to extrude 21mm
everything is ok
but if something goes wrong i need to manually retract the fillament 20mm
that is why i had created a macro button on the pronterface
G92 E0
G1 E-20.00 F300.00000
G92 E0
but it allays extract more and i i start the print partial of the first layer is not printed
what i do rong??
Kind regards all