Largest K'NEX ball contraption
Austin Granger
United States (Saint Anthony)

The largest K'NEX ball contraption has 126,285 pieces and was built by Austin Granger (USA), as demonstrated at The Works Museum in Bloomington, Minnesota, USA, on 13 March 2016.

The track has a total length of 278 m (918 ft).

Read more: Watch mesmerising footage of the world's largest K’NEX ball contraption