I’m engraving at 45 degrees due to the beam shape of my laser diode being oval in that direction. Typically if I want a 0.1mm line interval (254dpi) I set the line interval to 0.14 and I verify that the gcode does dots every 0.1mm x and 0.1mm y movement. I’m trying a smaller dot size of 0.085mm and set the line interval to 0.12, so now instead of doing dots every 0.085mm x and y it’s sometimes 0.09mm sometimes 0.08mm. The resulting image becomes stretched and hourglass shaped because of accumulation of error ends up being no longer rectangular.
How can I increase the accuracy of the gCode file to 3 digits after the decimal point for mm?