• Two Brass Monkeys

  • Manufacturers and purveyors of finely engineered metal puzzles. Made in Hertfordshire,UK, played with all over the world.
Click here to buy

Two Brass Monkeys

Manufacturers and purveyors of finely engineered metal puzzles. Made in Hertfordshire,UK, played with all over the world. Click here to buy

Current Best Sellers

  • £50.00
    £50.00
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  • £60.00
    £60.00
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  • Assembled Gob Stopper Puzzle. 12 pieces form a sorta-spherical puzzle.
    £105.00
    £105.00
    Sold out

Other information

Solutions to our Puzzles

As a general rule our puzzles do not come with solutions. We prefer to let our customers enjoy the endorphin rush that comes with that "aha" moment. There are a few occasions when we break the rule, click the button for the easy path to enlightenment.

Hints and Solutions

Taking care of your puzzles

Our puzzles should last a lifetime but left to it's own devices brass may tarnish over time. Some collectors love this others hate it. No matter where you fall on this issue click the button below for tips on how to give your puzzles the love they deserve.

Puzzle care

What other people say

We love our puzzles. Our families love our puzzles. But watch, read and  listen to what others have to say.  Our puzzles have been reviewed many times by enthusiasts world wide.

Reviews

Superb puzzles and manufactured to a really high quality and tolerances. Highly recommended!

Nigel

Very well made, great quality and challenging. Exactly what I expect from the Two Brass Monkeys.

Neil

This puzzle is fantastic, as are all the others that I have bought from Two Brass Monkeys. I want more.
Great customer service, too.

Tyler

Our latest release

Tetrahedrane Puzzle
Tetrahedrane Puzzle
Tetrahedrane Puzzle
  • Load image into Gallery viewer, Tetrahedrane Puzzle
  • Load image into Gallery viewer, Tetrahedrane Puzzle
  • Load image into Gallery viewer, Tetrahedrane Puzzle

Tetrahedrane Puzzle

£60.00
£60.00
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Tetrahedrane is an easy assembly puzzle, first designed and prototyped by Oskar in May 2009.

It is, of course, our brass and stainless steel take on Oskar's 3D printed puzzle "Screwballs".

The puzzle has six identical stainless steel rods with right and left-handed threads at the end, and four different vertices, each with three threaded holes. The object of the puzzle is to assemble a tetrahedron. 

The puzzle comes assembled and stands around 60mm tall when assembled and weighs around 120g

We felt we couldn't call our version of the puzzle Screwballs, as we have no balls and that name is a little bit risque for our liking. So we asked Oskar for his suggestion and he said :

"My suggestion for the name: Tetrahedrane Puzzle (https://en.wikipedia.org/wiki/Tetrahedrane). Tetrahedrane is a yet unsolved chemical mystery, so the name may be appropriate in multiple ways."