One-sided Pentominoes

Puzzle description:
There are 18 one-sided pentominoes because six of the usual two-sided pentominoes change their shape when flipped over.
There are many challenges for the one-sided Pentominoes: https://puzzler.sourceforge.net/docs/pentominoes.html#one-sided-pentominoes
If you can read German: Mehr Aufgaben für einseitige Pentominos: https://welt-der-geduldspiele.blogspot.com/2025/10/aufgaben-fur-einseitige-pentominos-nr-1.html

Puzzle difficulty:
Different for the various problems. From beginner to expert.

Printing instructions:
The pentominoes are modeled using PuzzleCAD: https://www.thingiverse.com/thing:3198014. On top of a usual pentomino (in red) is a copy reduced in size (in silver). The slicer automatically finds the correct height for a filament change.
Prints are fine with no supports, but need a manual filament change.
I printed the puzzle in PLA at 0.1 mm layer height.