Mr Puzzle - The design of the Wil Strijbos Aluminium Cross is still as unique and intriguing as when he first created it more than 40 years ago. Even if you see
Aluminium Cross by Wil Strijbos | Neil's Puzzle Building Blog
Puzzling Times: Wil's not-so-heavy metals
Aluminum Cross (Wil Strijbos)
Egg by Wil Strijbos Metal Puzzle | Metal puzzles, Unique puzzles, Puzzle
First Cross | Wil Strijbos | Puzzle Master Inc
Let's solve together: Wil Strijbos' First Cross puzzle - I FLUKED it - YouTube