impossible object puzzle square circle triangle in one shape —

Founded impossible object puzzle square circle triangle in one shape models & stl files for printing
Squid Game Square
philippeb66
Nail Puzzle Box
BINGOPRINTS
Spiral puzzles
peridot
3DPuzzle Ball
HobbyPrinter
3DPuzzle Van der Poel
HobbyPrinter
Ball Puzzle  Brain teaser
Creative MinerX