Actually I had the cleaning passes built into the 8 hatches in EZCAD3 and No you dont clean afterwards if you want your color , I got the exact results I expected with no cross hatch in some for the reflected glitter in the green . So if I had run a clean last it would have striped it , just as the white scroll on the one gun shows striped , I intend to bright cut those scroll with my hand gravers where i did do a cleaning pass on that. What type laser and power you running ? Are you building your own patterns/art in adobe illustrator ?