How Long Does LEGO® Science Kit Year 7-9 (45622) Take to Build?

A typical builder finishes LEGO® Science Kit Year 7-9 (set 45622, 424 pieces) in about 1 hour 5 minutes. Taking it slowly runs closer to 1 hour 30 minutes; building at a fast pace, about 50 minutes.

PieceTick estimates build time from piece count, part complexity, the set’s age rating, your experience level, and how you sort pieces. Adjust those on this page for an estimate matched to how you build.