Do I really need G1 on every line?

debgz

Hi, I am totally new to the topic of 3D printing/cutting/laser and just got my first machine this week.

On my first test run I tried to laser a SVG (converted with LaserGRBL software to GCode) and discovered some stuff in GCode I did not expect.

The generated file gives me something like this ...

G1X35.65F2000
Y47.75
X34.03Y46.97
X33.78Y46.94
X33.48
X33.21

... which works perfect in the simulators I tried (LaserGRBL and CaMotics) but did not work on the machine in a way that most of the X commands got executed but none of the Y ones. I expected this code to work fine as it says G1 followed by coordinates (on the following lines).

What I needed to fix it was a "G1" on every single line:

G1X35.65F2000
G1Y47.75
G1X34.03Y46.97
G1X33.78Y46.94
G1X33.48
G1X33.21

Is there a setting a setting somewhere to switch between (what I call) shortened Code vs strict mode?

Happy printing/cutting/lasering
debgz

Phaedrux

Have you switched into laser mode?

dc42

@debgz you need G1 on every line if the firmware is in FDM mode. You don't if you switch to CNC mode or Laser mode. See the M453 and M452 commands.