Vertical Banding

Any idea on how to get rid of this vertical banding?
It only happens in Dither modes (Greyscale is fine) and always in the same spot, no matter how I rotate the image or what direction I set the laser to engrave in. I’ve also tried changing the DPI, which didn’t help.
I’m using a 50w eBay laser with a cohesion3d board - Power 25, Speed 100, DPI 210

This topic was automatically closed 30 days after the last reply. New replies are no longer allowed.