I've learned this method of printing from โ Davinโ from โmakeanythingโ channel, which he talks about printing with multicolor on a single extruder in 2 videos , you can found the videos right here ๐
And :
So Thanks to David so much for this method .
I included a file of the board with multicolor and single color ( without text ) which you can customize whatever text you like ๐
No supports needed.
Don't move the model and the text to be sure that the parts are in the right place.
Print with heated bed, so you can bed it directly after taking it from the printer to have arc-like shape, or you can use a source of heat like : heat gun , lighter , etc. then bend it.
Glue some sanding paper on top for better grip.
Finally, tie a string or thread through the hole in the model so you don't worry about dropping it from the window.