Machinist's Stash Puzzle

Recently reviewed by our friend Mr Puzzle, this is an impeccable piece of precision engineering. The Machinist's Stash has a hidden compartment which can only be accessed via a labyrinth lock. Easy to close, but a real challenge to open, the process "requires strict adherence to the algorithm" and an error at any stage throws you back to square one.

There are no hints how to open the cache and this one is an extreme challenge. This puzzle is a re-release of the Fire Plug Puzzle designed in 1992 by Marcel Gillen. Handmade from bronze and duralumin, the Machinist's Stash is a pleasure to and is sold assembled. Made in Ukraine by Andriy “Bruns”.