Laser stops in middle of job

drew a simple hexagon 4"x4" , laser cuts 5 of the 6 sides then stops ??
recently installed limit switches on my 3018 pro which has aprox 300x180 work area. configured grbl and homing sequence works fine .
z goes all wall up , hits switch then comes back down a bit
then x moves to far left and y axis table moves to back and triggers that limit switch so home is bottom left 0:0:0 .

i tried moving drawing around pallet but still wont finish ??
tried a simple circle and laser starts and moves for a few seconds then stops . no error codes??

Are you running the job in ‘Absolute Coords’ mode? Or one of the others?

image

If you’re using a different mode, you might be too close to the starting position and triggering a limit when it gets to the end. Does the console say anything? (You can copy & paste the console output here for us to look at)

Waiting for connection…

Waiting for connection…

Port opened, waiting for response.

Grbl 1.1f [’$’ for help]

ok

Starting stream

error:20

On or near line 3:

Stream completed in 0:00

ok

ok

ok
here is the console info. i tried to upload gcode but says not supported?
i am operating in absolute coords

Copy and paste first 20 or so lines here as text. We can go from there. :slight_smile:

how can i open the file , what program allows me to see contents as windows wont open.
sorry still new to this

After you save the file from LightBurn, you should be able to open it with any text editor. You may need to change the file extension to “.txt” to open, but the file LightBurn generates is a simple ASCII text file.

; LightBurn 0.9.07
; GRBL device profile, absolute coords
G00 G17 G40 G20 G54
G90
M4
; Cut @ 41.811 in/min, 40% power
M7
G0X3.5558Y3.1343
G0Z0.012
G1X2.8762Y4.0385S400F41.811
G1X3.5559Y4.9427
G1X4.9151
G1X5.5948Y4.0385
G1X4.9151Y3.1343
G1X3.5558
G1X2.8762Y4.0385
G1X3.5559Y4.9427
G1X4.9151
G1X5.5948Y4.0385
G1X4.9151Y3.1343
G1X3.5558
G1X2.8762Y4.0385
G1X3.5559Y4.9427
G1X4.9151
G1X5.5948Y4.0385
G1X4.9151Y3.1343
G1X3.5558
M9
G1S0
M5
G90
; return to user-defined finish pos
G0 X0 Y0
M2

It’s the M7 command - it also appears that you have two different threads going here for the same issue? You should try not to do that.

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