This is the aluminum version of Felix Ure's excellent Titan
puzzle. Functionality is the exact same as the brass version.
Titan is a simple-looking, yet highly challenging take-apart puzzle. The first design by Felix Ure, it's widely regarded as being both incredibly difficult and very satisfying to solve. The goal is to open the sphere but to do so you must defeat the mechanism which keeps the two spheres together.
Machined from solid aluminum, Titan measures 2 inches (50mm) in diameter and weighs 515g or approximately one lb.
Puzzle Mad wrote an excellent blog post; Mr. Puzzle's video review is excellent but does contain spoilers.
Handling Metal Puzzles
While all metals tarnish over time, residual oil and salt from handling speed up the process and leave fingerprints. An individually packaged metal cleansing cloth is included with each metal puzzle sold on Cubicdissection. Metal Puzzle Polishing Kits which contain a larger cleansing cloth and microfiber polishing towel are also available.