LaserUser.com Forum (formerly RDWorksLab)

I usually cut printed photos with designs, to which I then add mdf as a support.
Without a vision system controller, I have found the method of marking opposite vertices quite effective. But cumbersome. It implies registering photo by photo because in my case the margin should be the minimum possible. 1 mm is acceptable.
I have seen many different systems, including Ruida's projector and just now I discover the camera in lightburn! but camera and license is an expensive investment in these places so I ask the forum: has anyone had any experience regarding the work that I mention with lightburn? Is the precision I mention possible? There is nothing left of the lightburn thread in the forum ...
Thanks
Martín.-

Almost all the discussion has moved to the Lightburn forum- https://forum.lightburnsoftware.com/

I can't help on your question unfortunately.

lightburn is free for 30 days so you can test. you can even ask for more time if needed, they are open on this subject and can extend the licence.

a basic webcam is sufficient to test. if correctly calibrated, it seems very possible to obtain sub-millimeter precision (provided the camera is well placed and sufficient resolution)

a very basic 720p camera has a definition of 1pixel / mm on a 720mm bed.

I really recommend you spend some time on the lightburn forum searching out the many camera threads and reading them because there are various factors that can affects how well a camera will work on your system.

Yes Gene, I had already read everything I found but no similar experience.

Yes Sebastian, it was my second step, getting an acceptable webcam and testing, achieving sub millimeter accuracy would be excellent. I make sandwich materials for industrial equipment and it would be a step forward

Yes, Doug, I had already read the forum of lightburn and personal pages, as well as videos. I found several important facts and I could watch videos to get an idea, but no similar experience to know directly from the mouth of another. There is nothing left to do tests

Thank you all
Martin.-

I think Oz just received some 8 mp cameras in stock. Definitely ask for one of those if you buy from Lightburn because I find the 5 mp lacking if I need to zoom/enlarge the image at all.

Careful calibration and having a system that is repeatable are both key things. If you mount to the lid of your scanner, the lid must not wobble and stop in the exact same spot each time you open it. I found my system was more accurate by a few mm in certain areas of the bed of the laser than others and I am guessing that might be corrected by another calibration attempt.

I have found my system on my 50watt china blue machine to be more accurate then on my black and red 60 watt machine with a bigger bed. I think it is down to the focus of the camera that was needed for the larger bed not being as accurate as the focus on the smaller bed size.
The accuracy is very good if you calibrate it and use it correctly.

I have Lightburn and the Lightburn camera. And I think it was the best investment I have made so far. For example. I have some 30mm Redheart disks that I didn't want to waste. So, I put them in the laser and hit update overlay. I then put a 25 mm x 27.2 mm earring in the middle of it and cut them. And it hit the disks almost dead center. I will not go without this camera again. It will make it so easy to use waste wood. And if you would like a demo of the camera: https://youtu.be/Z4TaZUkvDbM

That is a great endorsement for the camera- note to self, get off your duff and learn LB. Thanks Gene

Well, it wasn't intended as an endorsement for LB, but ok. I really like LB, it is so much more polished than RDW. And the developer is active in their forums. And, there isn't really much of a learning curve. Very similar to RDW in many ways.