Titan by Felix Ure
The aim is to open the sphere.
A simple-looking, yet highly challenging take-apart puzzle.
Machined from solid brass, Titan measures 50mm in diameter, and weighs 515g.
The brass is left unfinished, leaving it to slowly patinate and darken with use.
If you're stuck on a puzzle, email firstname.lastname@example.org and ask for a clue.