I am currently working on a light panel. All the printing, wiring and programming works quite well, except the letters on the panel. I always have little spaces inside, so the ink of my white pen shows also little black spaces. They are also very sensitve, so a bit of touch and they come off.
I extruded them 1 mm to the outside, font is arial black and the size in fusion 360 is betwen 3 and 5 mm. It seems it is a problem of Cura as my panel looks very well in Fusion 360, but the problem starts with creating the printer file.