I modified the center lines of the BMW logo with "Mdozer" and scaled the main logo from 12 cm to 37 mm and 27 mm, as these were the sizes I printed with a quality of 0.12 mm and a 0.4 mm nozzle. I also created two different keychain models in case anyone wants to print them as well.

Colors:

• Black (base) + Silk silver (G-code M600 'change filament' (in my case at layer 10) for the BMW lettering and circles)
• Blue
• White

The blue and white parts were printed twice (once in white and then in blue) using the G-code for 6 parts I’ve provided above. I printed two 37 mm logos and one 27 mm logo, so I needed 6 white pieces and 6 blue pieces for the 3 logos.

For the base, I used black PETG at 240°C for the hotend and 72°C for the heated bed.

For the other colors, I used PLA at 200°C for the hotend and 50°C for the bed.

I highly recommend cleaning the nozzle thoroughly before and after each print, as well as when changing filaments, to ensure optimal quality for the lettering.