I am testing the air assist on my SM.
SM documents M8 for air on and M9 for air off.
I have M8 checked under device settings, basic.
No air.
My pump is connected per the SM docs.
What am I missing?
Update: I put M08 in my startup gcode and M09 in the ending cgode, and now the air assist pump comes on and off as it should. So it appears to be a lightburn settings issue?
I don’t know what else to check. My cut lines are in a layer with air assist selected. My device settings have M8 enabled (I assume that’s the same as M08) I don’t see M9 or M09 mentioned anywhere, but I assume that’s implied if M8/M08 is enabled. In any case I’m cutting last, so if the air pump doesn’t turn off that’s not the end of the world.
Where else in lightburn is the air assist controlled?
Ok, after working with LB tech support, the solution is to NOT use the snapmaker profile, but to use a GRBL profile under Laser Tools, Manage Devices, Create Manually. I used the plain “GRBL” profile, and the only thing I really had to do was enter the bed size (350/320 on the SM350) When I output the job under that profile, the air pump is controlled as I expect with no mods needed to the Gcode.
Note: I’m running LB2.0 RC2 now. Not much point investing time in earlier versions with 2.0 release coming soon.
I did notice that in LB 1.7 the test box was off by 12.3mm in Y, and that the pointer offset (at least in the Y axis) did nothing. In LB2 RC2, the pointer offset works as expected in both X and Y.
Also FWIW, aligning the lower left corner of the test paper with the alignment cross on the 40W blue laser put the test box cut precisely where it should be, 20mm from the bottom and left edges as designed. IOW: No offset adjustment. I just moved the head so the cross was just barely on the edges of my precision test post-it note, and set that as the work origin. In LB I have that set so that the work origin is the lower left.