Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:4883453.
Funny door sign/decoration
I saw something similar as a flat sign. Gave it a shot recreating as a printed 3D sign. Multi-color on a single extruder, by using a plug in to pause (change filament) at layer height. My front door is metal, I'll be applying a self-adhesive magnetic sheet to the back on the print.
Printed at 0.2mm layer height, with 0.3mm initial layer height. Z-hop on. Ironing on.
Using default scale: layer 1-2 = black layer 3-4 = white layer 5-6 = red Scaled to 200% in each direction layer 1-5 = black layer 6-9 = white layer 10-12 = red
The " - fixed" file corrects an oversight in the example photo. I used a rectangle with a radius for the overall sign. But that actually resulted in a rectangle that didn't extend past ALL the letters. That's been corrected, but isn't reflected in the current photo.