Software (linux)
Candle
https://github.com/Denvi/Candle
https://github.com/Denvi/Candle/releases/tag/v1.0 (old grbl firmware)
Install candle linux ubuntu 20.04
ORIGINAL
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Z-probe commands
G91G21; G38.2Z-30F100; G0Z1; G38.2Z-1F10
G91G21G38.2Z-50F100; G92 Z0; G0Z5M30
G38.2 Z-1 F1; G92 Z0
FlatCam
http://flatcam.org/
git clone https://bitbucket.org/jpcgt/flatcam
Install Flatcam linux ubuntu 20.04
set_sys excellon_zeros T
http://flatcam.org/manual/index.html
http://flatcam.org/tutorial/selective
https://altrish.co.uk/wp-content/uploads/2021/02/flatcam-and-milling-pcbs-2021.pdf ( Local copy flatcam-and-milling-pcbs-2021 )
FlatCAM pratica tutorial: introduction, installation and import – Part 1