WinCNC doesn't like M3 Sxxx on the same line about grid-apps HOT 8 CLOSED

To be clear, WinCNC expects:

M3
S18000

in the gcode on separate lines? have you hand edited the gcode to do this and it works?

from grid-apps.

Yes and yes.

from grid-apps.

I see on p.135 of the manual (http://www.wincnc.net/webfiles/CNC%20Windows/Manuals/WinManual_3.0r3.pdf) that M3 is actually a macro expansion and not a native WinCNC command. If you are not using variable spindle speeds, then the easiest thing to do is to set all spindle speeds to 0 (zero) and add spindle on/off in your gcode pre/post. That way the M3/M4 commands will not be inserted into the gcode.

from grid-apps.

If I do that, how do I set the spindle speed at all? I don't adjust it during a job, but it is of course tool- and job- (well, material-) dependent.

from grid-apps.

I admit it's not terribly convenient, but under Device->GCode->Header add the lines at the end of the header.

from grid-apps.

Could there not just be a 'spindle start' template that defaults to 'M3 S{speed}' so I can change the space to a newline in my wincnc definition?

from grid-apps.

yes, that's totally reasonable. there would also need to be a "spindle stop" template.

from grid-apps.

!!! Dude, you rock!!!

from grid-apps.