dishwasher clean dirty Ampelmann

Diswasher clean sign. I have inserted an loudspeaker ring magnet with d=47mm, h=8mm. glue together.

How to make this:
slicing: If your magnet is different size, scale in X and Y. There is a useless circle around the object. This will help your slicer to find the same position.
first layer height 0.3mm, layer height 0.2mm. No support !
make a change to gcode:
After first layer change, insert this gcode

;color change pause
G1 X10 Y10
M300 S270 P100 ;beep
M300 S300 P100
M300 S330 P100
G4 P60000 ;wait
M300 S330 P100
G4 P6000 ;wait

openscad: If changes are required, insert size of your magnet. Source files of the symbol are changed in position and size.

printing:
change to red color, print stop.stl
remove useless circles, clean the symbol if neccessary.
change to red color, print go.stl
remove useless circles, clean the symbol if neccessary.
change to black color, print first layer up to your color change position
then change to white, print layer #2
after l