Oskar Puzzles offers mechanical puzzles and objects that can only exist thanks to 3D printing technologies. All designed by M. Oskar van Deventer. Since 1978, he has been creating hundreds of mechanical puzzles, making him one of the world's most prolific designers. Several of his innovative designs are commercially available, including Oskar's Cube, a metal maze cube that is completely hollow inside.
Order 3D-printed do-it-yourself puzzle kits from Shapeways at this page (and check with Oskar about screws and stickers), or contact Oskar directly if you want to buy a fully dyed, assembled and stickered puzzle.
Illegal Cube is a puzzle that should not be allowed to exist. This 'cube' has two corners and three edges too many, and two pentagonal faces. Still all types of turns seem to work. This puzzles is inspired by an idea by Jason Smith. Bram Cohen calls this type of designs 'fudged'.
Redi Cube is a twisty puzzle, similar to Rubik's Cube. Here, the pieces turn around the cube corners. For the experts: the mechanism has some similarities with the Dino Cube and the Rainbow Cube.
Fadi Cube is a twisty puzzle like Rubik's Cube. It is an attempt to use other than conventional slices to make a twisty puzzle. At first sight, it looks impossible to twist this puzzle at all. But the pieces go over and under each other to make it possible. According to Bram Cohen, the closest "relative" of Fadi Cube is Katsuhiko Okamoto's Lattice Cube.
DinoBram is yet another jumbling twisty puzzle concept by Bram Cohen. He calls this 24-turning-axes puzzle a "corner-turning rhombicuboctahedron". When turning, it changes shape and sometimes rotations are blocked.
Nested Cube has two 2x2x2's, one inside the other. However, the two 2x2x2 can not move independently, as two outer corners are connected to two inner corners. This introduces a new way of bandaging.
Astroid Attack is a twisty puzzle like Rubik's Cube. It is based on Bram Cohen's "jumble" concept, where the geometry is no longer isometric and faces do not turn in regular steps of 360/N degrees. The size (volume) of this puzzle is the same as a 6x6x6 cm Rubik's Cube.
Size 8, 18.54 mm inner diameter. This puzzle ring is a design by Bram Cohen. Bram writes: "It has basically a a single trick, but that trick is so cute and understandable that I think it's a compelling puzzle."
Size 8, 18.54 mm inner diameter. This six-part puzzle ring is a design by Bram Cohen. Bram writes: "This six-banded design is a straightforward extension to the traditional four-banded design which somehow never occurred to anybody before me".
Big Boulder is a blatant case of twisty puzzle extremism. 1 core, 60 centers, 140 corners and a whopping 150 edges. That is a lot of pieces. And to make it more complex, this puzzle jumbles too, which means that some moves may be blocked by other pieces. This puzzle is based on the geometry of a Pentagonal hexecontahedron. You may want to look that up on Wikipedia. The object of the puzzle is to scramble it and then solve it to a state where each color only touches itself or black.
Swap Cube are five 2x2x2 Rubik's Cubes in a frame. Each of the cubes can be scrambled individually. But the cubes can also swap pieces by turning the frame.
JumblePrism is an idea by Bram Cohen. It is a twisty puzzle like Rubik's Cube, but using on a triangular prism. Because of this odd geometry, the pieces get very "jumbled", as Bram calls it.