Hi everyone,
have a small problem I cannot solve. As you can see in the attached pictures I have a barrel and then I have the outline which I want to cut. In the preview everything looks great. But for the actual cut its just completly off.
I use the Atomstack X20 and when I tell him to go over the contours of the project he is going a bit out of the X and Y positions.
I attached here the beginning of the G-Code of the file, maybe someone here can see where the problem is:
I don’t see anything fundamentally wrong in the gcode. I think it may be possible that you’re losing steps during the rapid moves between layers.
Check belt tension and make sure they’re not overly loose, particularly along the X axis. While you’re looking, check for any other potential mechanical weaknesses that might allow for missed steps.
Thanks for the feedback but its not the belt tension. The machien first makes the inner engraving with higher speeds and no slipup of any sort. Afterwards the outer cut is made with a very slow, 4* repeated cut and it all aligns perfectly…except that its a few cenitemeters to the right
But thanks for checking the gcode.
Theoretically then there should be a problme with the machine. Which also does not make too much sense for me since its all cut really good but just a bit to the side.
Rapid moves will not move at either of the cut settings speeds. For GRBL controllers they move at the max speed defined in $ settings.
If not belt tension, it’s possible that that the motors are losing steps. Have you changed the GRBL configuration for acceleration/speed at all? I wouldn’t expect the settings to be higher than the motors can manage but it’s certainly possible.
I did check the belt tension but it was all good. The speed of my engraving was 3000mm/min and the cutting was 400 I think.
I just modeled the whole thing again with basically the same settings and now it worked without a problem. So for this project I am fine but would still like to know what the issue was.
I started the project 2 times and the result were always exactrly what I posted above.
Quickly want to emphasise what the laser did at the beginning of the job. I did set it to “Start from current position” but after confirming the position in the controller and starting the job, the machien would move a bit down and to the left…which I think should not be happening.
With the correct job now this did not happen anymore.
I realized I didn’t state it specifically, try running the same job from LightBurn connected to the laser to see if you have the same issue. That will isolate the issue to the offline controller.
Seems to be the offlien controller. Started the same job once with the offline controller and once with the lightburn directly from the PC.
With the PC the laser moved to the right and started its cut.
With the offline module it went to the bottom left before starting.
Since I am reliant on the offline controller this is not that great for me. Lets see what the future brings. Also just updated the firmware but no luck there.
I tried around a bit but could not really find a pattern…its strange. If I use coordinates it always works perfectly and is my prefered method when engraving. In this case I also had to cut and therefore use my honeycomb and thereby could not use my grid for alignment.
