Hello tweakie, my name is Jose Antonio and I'm from Cuba.
I tried using the g-ray but I have a problem:
I am using for white 1500 mm / min and black 300mm / min but what I print always remains very dark because if it is white every time the speed is updated it seems that the match does not give time to reach that feedrate and it is lost.
For example if I have a line with pixels with the following feedrate sequence: F1100 F900 F1300 F1200 F1225 F1400, in fact what I get from feedrate output does not even reach 400 mm / min because it is as if it took a while to go from 0mm / min at 1100 mm / min. I know it's a problem in the match but I have no idea what it can be. I also have the acceleration of the axes to the maximum to avoid just that but nothing.
If you could help me, I'd really appreciate it.
PD: I've seen your official page and your posts in many cnc forums and your work is great. Congratulations.
Greetings from Cuba.