I am very new to using a laser of any kind, and am experiencing some issues with homing and positioning. I have done some research on how to correct this issue, however, it is still persisting.
When I first turn the laser on, it will home to the front left (as it is supposed to), but, when I go to frame what I would like to engrave, it does not go to the correct place indicated within LightBurn. I will give a few examples, as they are different for each ‘Job Origin’ setting:
Example Project: Burning a square whose middle is in the center of the laser workspace
Job Origins:
Absolute Origins:
When ‘Frame’ is pressed, it will not frame the square where it is in LightBurn (in the center of workspace). Instead, it will go to the upper right-hand corner of the workspace and frame the shape there.
User Origin:
When ‘Frame’ is pressed using this job setting, the laserhead will go to the left-hand corner of the workspace .
Current Position:
When ‘Frame’ is pressed on this third job setting, it will also go to the bottom left-hand corner. However, once it is there and I attempt to frame the shape again, it will attempt to move into the left-hand y-axis gantry and makes a gritty and somewhat stuttering noise.
I am assuming that my laser and LightBurn are experiencing some miscommunication in regards to the workspace area, but I am not sure what that means if that is the case. I have tried to correct this, but there is nothing wrong with the workspace dimensions. Is it at all possible that something was installed backwards? Everything else with my laser works just fine, but having it move to a completely different region where the shape is not is concerning. Any and all help is much appreciated!
the ortur have no home swith so he take the actual position like the home, you must define correctly the home angle, the moving work space, the moving direction, and place correctly your piece
to help you to place correctly your start point add 2 modules laser liner to make a cross at the engraver laser point
if that don’t help you try to explain better your problems
Ok. I will certainly give that a try! I did find, through expirimentation, that the Absolute Coordinates setting was the most reliable. Yes, my laser is the Ortur Laser Master 2. When I first set this laser up in Lightburn the workspace dimensions on the laser’s title read 400 mm by 430 mm. I just double-checked this in the Device Settings in Lightburn, and they also correctly reflect this. Thank you!
Thank you! I will also give this a try. So, you make a cross where the wood piece you want to engrave is in the workspace? By laser liner, you mean the ‘Frame’ feature? The one that traces the outline of the piece before engraving? I think I understand what you are saying, I just want to be sure.
Hello! I am still trying to figure this out… When I have a better understanding on what I am doing to make the laserhead placement more dependable, I will let you know! I am very grateful for this community. These lasers can certainly seem simple, but also have their learning curves to them as well!
I just finished running these commands. Here is a screenshot of the results within LightBurn. Being new, I am not sure what the results mean. Are they indicating that everything looks good?
I dont see anything that would cause the specific issues that you’re talking about but I do see some interesting settings. Have you recently used a rotary on your machine?
Change these settings to change to machine position and enable soft limits:
$10=3
$20=1
These shouldn’t cause your issues but let’s just get a clean slate.
Once done, can you power cycle and then rerun a test using absolute coords?
Try this file. Please describe the behavior. If things don’t work as expected can you do a “Save Gcode” and upload the results here? You will need to change the file extension to .txt in order to upload here.
Ok. I am trying to open the file that you have attached, but my computer (as well as LightBurn) is not recognizing the extension. When I go to open the file, it disappears. Would you please send it again? To answer your other question in regards to the settings, I have not used a rotary with my machine, as I do not yet have one. I agree that there needs to be some resetting to the settings.
I am also experiencing something else peculiar (most likely due to the facts that I am new to this, as well as the strong possibility that there are some odd settings). Yesterday I was attempting to burn a QR code onto some olive wood (the image itself was no larger than 2 inches in both width and height), and the preview window read that it would take almost 2 hours to burn. I find that this is far too much time for something that small to engrave. Do you think that this may have somthing to do with yet another odd setting? Thank you so much for taking all this time to help me out. It is greatly appreciated! Hopefully, this laser will behave better soon!
I updated LightBurn in my computer and was able to get the first file that you sent me to work. Before I did so, I went ahead and used the first commands that you recommended ($10=3 and $20=1). After this, I did a power cycle and kept it on the Absolute Coordinates Job Origin. I appeared to have been quite successful! Here are some screenshots of within the program as well as the initail results. NOTE: I used two layers (one for the square from your file, and another that I used for some text that I added, to see if it would burn in the center without having to externally adjust anything). The burn settings for each were:
Square:
SPEED (mm): 300
POWER MAX: 40%
POWER MIN: 5%
Text:
SPEED (mm): 1000
POWER MAX: 100%
POWER MIN: 10%
Since this appeared to have been successful, should I also go ahead and use the $RST=* command? Also, does LightBurn save these commands within the program itself, even if you do not end up saving the file within which you did the commands? I am going to try engraving the QR code that I attempted a few days ago to see if the engraving time has reduced in to a more proportionate amount of time to its relative size.
These changes are not actually in LB at all. They are stored in the controller and will persist until changed again. In other words even if you power cycle.
Anyway, sounds like you’re in business. Good luck!
