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Gear Bracelet 7+5 3d printed

DIGITAL PREVIEW
Not a Photo

Gear Bracelet 7+5 3d printed
Gear Bracelet 7+5 3d printed

DIGITAL PREVIEW
Not a Photo

Gear Bracelet 7+5 3d printed
Gear Bracelet 7+5 3d printed

DIGITAL PREVIEW
Not a Photo

Gear Bracelet 7+5 3d printed
Gear Bracelet 7+5 3d printed

DIGITAL PREVIEW
Not a Photo

Gear Bracelet 7+5 3d printed
Gear Bracelet 7+5 3d printed

DIGITAL PREVIEW
Not a Photo

Gear Bracelet 7+5 3d printed
Gear Bracelet 7+5 3d printed

DIGITAL PREVIEW
Not a Photo

Gear Bracelet 7+5 3d printed
Gear Bracelet 7+5 3d printed

DIGITAL PREVIEW
Not a Photo

Gear Bracelet 7+5 3d printed
Gear Bracelet 7+5 3d printed

DIGITAL PREVIEW
Not a Photo

Gear Bracelet 7+5 3d printed
Gear Bracelet 7+5 3d printed

DIGITAL PREVIEW
Not a Photo

Gear Bracelet 7+5 3d printed
Gear Bracelet 7+5 3d printed

DIGITAL PREVIEW
Not a Photo

Gear Bracelet 7+5

Made by
Not For Sale
$119.54
3D printed in white nylon plastic with a matte finish and slight grainy feel.
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Product Description
Back in 2013, Ferdinand Lammertink showed me a puzzle prototype of his, made of lego. His prototype featured eight large lego gears connected in a cylinder. Ferdinand called it Gear Bracelet. The puzzle could be scrambled by folding the bracelet flat, and turning four out of the eight gears. Then, like any twisty puzzle, the challenge is to solve it and get all eight gears back into their original orientation. Unfortunately, Ferdinand's prototype was a failure for two reasons. First of all, the puzzel was trivial to solve, as four adjacent gears could be trivially solved one by one, and then the other side happens to be solved as well. Secondly, the puzzle could be easily cheated, as gears disengage too quickly, and one could easily turn each gear individually. Ferdinand abandonned the idea, and unfortunately there exist no photos of his original prototype. 

Gear Bracelet 7+5 builds on this original idea by Ferdinand. It is a also a gear bracelet with 8 links, each with a little gear. Some of the gears have 5 teeth, some have 7. The puzzle is scrambled by folding the bracelet flat and turning part of the gears. It was quite a design challenge to develop the 7-teeth and 5-teeth gears to mesh in the way that they do. The object is again to get all gear re-aligned again. The bracelet can be assembled in different ways. The photos and video shows the 7-5-7-5-7-7-5-5 configuration, which is the hardest to solve. Other configurations are for example 7-5-7-5-7-5-7-5, 7-7-7-5-7-5-5-5 and 7-7-5-5-7-7-5-5. The puzzle is not for sale, as requested by Ferdinand. He considers the looks and turning quality too poor to expose this to customers.

Watch the YouTube video.
Read at the Shapeways Forum.
Read more at the Twisty Puzzles Forum.

Please order a 3D-printed do-it-yourself puzzle kit from Shapeways at this page (check with Oskar about screws and stickers), or contact Oskar directly if you are interested in obtaining a fully colored, stickered and assembled sample of this puzzle.
Details
What's in the box:
Gear Bracelet 7+5
Dimensions:
6.86 x 7.26 x 4.27 cm
Switch to inches
2.7 x 2.86 x 1.68 inches
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Success Rate:
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Rating:
Mature audiences only.
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