The page says “I still have no idea how I discovered the clever design which only uses 120x 2x2 bricks and 60x black pins”. Some of those pins are visible in t

The page says “I still have no idea how I discovered the clever design which only uses 120x 2x2 bricks and 60x black pins”. Some of those pins are visible in the photo. He put them on the ‘outside corner’ of the 60 ‘outer’ bricks I don’t understand how they interlock. Things should get crowded, so maybe that’s ‘just’ a matter of putting everything in the right place. That surely would warrant the claim “building this thing is an absolute nightmare”