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!!

IPP29 Roll Up! Roll Up! Dexterity PuzzleSmall imperfection in the wood path (as seen in the photo), but surprisingly doesn't impact the marble run. Never could figure out the puzzle at the base - if you have a solution, please let me know, thanks! Buyer to pay actual shipping - calculated upon closed auction. I have other auctions active and will combine shipping.Paypal Only - good luck!

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...