Seven Hyperbolloid pieces beside a US quarter for scale.
Another picture of the seven disassembled Hyperbolloid cylindrical puzzle pieces
Don't look too closely, this shows the complete six piece assembly.  Not as easy to assemble as it looks.
Seven pieces of the Hyperbolloid puzzzle. If you can't assemble  them, they do stack neatly.
Alternative stacking arrangment of the unassembled Hyperbolloid brass puzzle pieces
Hyperbolloid piece in custom protective packaging together with information card that accompanies the puzzle.
  • Load image into Gallery viewer, Seven Hyperbolloid pieces beside a US quarter for scale.
  • Load image into Gallery viewer, Another picture of the seven disassembled Hyperbolloid cylindrical puzzle pieces
  • Load image into Gallery viewer, Don't look too closely, this shows the complete six piece assembly.  Not as easy to assemble as it looks.
  • Load image into Gallery viewer, Seven pieces of the Hyperbolloid puzzzle. If you can't assemble  them, they do stack neatly.
  • Load image into Gallery viewer, Alternative stacking arrangment of the unassembled Hyperbolloid brass puzzle pieces
  • Load image into Gallery viewer, Hyperbolloid piece in custom protective packaging together with information card that accompanies the puzzle.

Hyperboloid Burr - 6/7 Piece Brass Puzzle Design by Oskar

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£80.00
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£80.00
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Price includes Shipping. Buy 2 or more puzzles and get a 7% discount.

The Hyperboloid Burr is a six-piece burr puzzle made from identical hyperboloid pieces. It was designed by Oskar van Deventer with the help of Naoaki Takashima.

A wooden version was made as a limited (sold-out) edition for Naoaki Takashima by the Kanagawa Toy Company in Odawara. While working on the wooden pieces, the manager of Kanagawa Toy found an unexpected 7-piece solution. A 3D printed version is also available.

With Oskar's permission, we have recreated the puzzle in Brass. We learned a few things along the way: Brass is heavier than wood. Brass has lower friction than wood. Brass does not flex nearly so much as wood. All this means our puzzle pieces have been machined to very accurate tolerances.

The six piece version of the puzzle assembles and displays well, but if picked up by a single piece falls apart under its own weight. Each piece is 42mm long, has a diameter of 19mm, and weighs 49g. The assembled seven-piece puzzle has a nice heft to it, weighing in at about three-quarters of a pound. T

The seven piece assembly is completed with a satisfying "click" and holds together well - it's a fidgit desk toy in its own right. It turned out the tolerances for this puzzle were absolutely critical. A mere 0.03mm tighter or looser and the seven piece version of the puzzle either does not assemble or falls apart! The pictures contain a slight spoiler, the six piece assembly is shown but can you find the seven piece assembly. The puzzle ships disassembled.