How Long Does LEGO® Classic Trial Size (4284) Take to Build?

A typical builder finishes LEGO® Classic Trial Size (set 4284, 123 pieces) in about 20 minutes. Taking it slowly runs closer to 25 minutes; building at a fast pace, about 15 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.