Basically at my wits end with this laser. Ortur laser master 2, upgrade to 10w ortur module. If I turn bi-directional fill on, the horizontal spacing between lines is uneven. You can see 2 lines closer together, then a gap, a line, than it repeats. Bi-directional fill off and line spacing is perfect. First pic top is bi-directional on, bottom is turned off.
I’ve checked and rechecked all belts, pulleys, connections. Disassembled and reassembled twice now. Issue persists in the exact same way no matter what. I’ve swapped motors, belts, power supplies. Multiple materials tested on, I’ve lowered my machine accel. And speed. Tried increasing overscanning to over 30%+. Turned off fast whitespace and on. Multiple lpi settings. Lower values just make it easier to see, doesn’t change anything. I’ve enabled scanning offset which helped get the ends of the lines lined up but did not help the horizontal spacing.
Here is a post on the lightburn forums, user was having the exact same, and I mean picture perfect, exact same problem. Different type of laser, controller. Different system all together but the exact same issue which seems weird to me

