klein — as the name suggests, is a take on the classic klein bottle concept. it is a dexterity puzzle with a metal ball inside.– the task is to extract the ball from the bottle.difficulty: 8 on 10size: 60 x 60 x 80 mmmaterial: 3D printed resin, finished with glossy lacquer & resin based paint.listing price is exclusive of shipping costs.timeline: i will require approx. 6 weeks to manufacture the batch and ship.cheers!

Venn PuzzleDescription:For sale: the renowned Venn Puzzle, a modern mechanical puzzle known for its elegant design and precise engineering. This puzzle is perfect for collectors and puzzle enthusiasts seeking a challenge that is both aesthetic and stimulating. The Venn Puzzle offers a unique experience that will test your logic and dexterity. • Condition: Very good condition, handled with care. Photos available upon request. • Price: €65, non-negotiable. • Payment: PayPal Friends and Fam...