Hi Eugenius,
As far as I know with AXIS (the default LinuxCNC GUI) those things aren’t easily configurable from settings.
Bigger axis jog buttons: AXIS uses a Tk/Tcl interface, so the button sizes are basically defined in the GUI script. If you want them bigger you would need to edit the AXIS UI files (usually in something like linuxcnc/share/axis/). It’s possible, but it means modifying the Tk layout manually.
Secondary spindle control: AXIS is quite limited for multi-spindle setups. You can control additional spindles through HAL and M-codes, but the GUI usually won’t show extra spindle controls unless you customize the interface.
If you need more flexible controls, many people switch to QtVCP or gmoccapy, which are easier to customize than AXIS.
So yes, it’s possible, but it usually means editing the AXIS UI scripts or moving to a different GUI in
wheelie life
.