I purchased a cohesion 3d board, lightburn and the lightburn camera for my K40 a little over a month ago and just now have had the opportunity to get things set up. The first thing I noticed is that I’m loosing about an inch at my origin (front left) on my Y axis. Ultimately, no matter what I do in the software, change bed size and so forth, it just will not go there. In a 10" x 13" bed size every inch counts. If I manually pull the gantry forward then from that point on I can use the area, but once it’s homed it will not go there any more. I ultimately opted to loose the inch and move on with my camera set up.
I set up the camera at least 10 different times yesterday and still couldn’t get things straight. I think I finally fixed the fish eye issue but alignment is still off. Again, it’s Y axis related. Each time I move to a point in the overlay the actual burn is about an inch too high. Adjusting the overlay size and position has no effect, the burn is still in the exact same place.
Any help with this Y axis issue would be greatly appreciated. I am still running the default Smoothie on the board. The main purpose of this machine is engraving so would it fix my issues if I switched the board to GRBL? Thanks