I made a display box on my S3 yesterday that wasn’t very flat on the top or the bottom after I glued it up. Today I made a simple flattening program (side to side raster with a profile at the end), saved the code, opened it and added G4P3 after the M3 command and ran the program.
The spindle moved to the corner didn’t start until the plunge. 5sec into the clip. Everything ran fine with the raster. But what I can’t figure out is, after the raster the spindle stops,1:14, moves to a corner and then starts back up on the plunge. This is the first time the spindle has ever shut off between moves.
I ran the program 5 times and the same thing happened every time. I’ve looked over the gcode and the only starts and stops I see are at the beginning and the end.
S15000M3 - Spindle start
G4P3 - Pause (Added this)
G0X-3.2950Y-2.0163Z0.1000 - Move to start of raster
G1X-2.7950Z-0.0050F20.0 - Ramp in
G0X3.3750Y-2.3750 - End of raster
G0Z0.0000 - Spindle stopping - no M5
G1X2.8750Z-0.0050F20.0 - Spindle starting - no M3 / Ramp in / start of profile
M5 - Spindle off
It’s not really a big deal, I just kind-a want to know why my machine is doing things it’s not told to do.