



Hopefully something above helps you get it going. Measure out a square, burn and check if you're able to. If you are telling the machine to move 450 mm and it's moving basically 1000 mm, could be a possible calibration issue. I think this one might be the main culprit. I believe your issue with the machine crashing to the right side is the job position that is chosen. If you're asking about the bed sizing could possibly be wrong, is it a safe assumption you didn't watch the set up videos online that light burn has? They really help and walk you through setting your machine up. "Set laser position"? Did you mean to say "set origin"? you have 3 options that you will use- clear origin, set origin and set finish position. Jtech has a couple of videos that might help as well. Did you watch the light burn tutorials? They're decent to watch and you will learn a lot really quick. You may not have the job origin set up correctly. If the machine is hitting the right rail, a few things come to mind. I am not in front of my computer to look at my settings, so I am trying to think of stuff off of memory. $31=0 (0=mm 1=inches Position Display Units) Here are the default GRBL settings for the Mega V that might be of help.
