Printed with two PETG filaments on a glass bed with hairspray. Printed the black lines (with a custom end code that doesn’t turns off motors) then printed the white over it in a separate gcode (also with custom start with no homing). It even allows me to go with an exact and cut off hairs and blobs before laying the white. The. The two fuse on the same layer so the color isn’t sticking out.
So I put the text on the top and make it 2 layers higher- I have cura pause the print on last layer before text, swap filament, and then finish the print. It makes a nice raised text effect and doesn’t required modifying the gcode. Downside of course is the text is on the top instead of the smooth side, but I like the effect and it’s easy! Nice print though!
I print the letters face down on the print bed with a first Gcode (make sure the geocode doesn’t stop the motors at the end). Then you print a second file over it for the plate that has a gap of your initial layer height where the letters are. The benefit is that if I fail a print, I only wasted on layer not a whole print.
If you use something like tinkercad you can hold both objects in the same spot and export them one at a time. They will in turn populate the same position in cura.