Intercooler keychain (IC turbo) pendant
If you do not wish to include my brand logo at the end, simply use monochrome (.3mf files are suitable for BambuLab printers and contain optimal settings for layer orientation, number of walls, infill, and smoothing).
For .stl files and Cura/IDEAMAKER or other slicing software, use the top-layer pattern and set the line direction correctly to “intercooler interior lines” from top to bottom; ironing the very top layer yields excellent results.

Enjoy it!