cover

How do tiles fit together without gaps?

Grout's Forgiveness
How do tiles fit together without gaps?
You're staring at a bathroom floor, or maybe a kitchen backsplash, and every tile sits snug against its neighbor — ~~not

You're staring at a bathroom floor, or maybe a kitchen backsplash, and every tile sits snug against its neighbor — not a sliver of daylight between them. How do they do that? Did someone measure each one down to the millimeter? Did a robot cut them? Or is there a secret?

Here's the trick: tiles fit together without gaps because they're made in molds, and molds are copy machines. One factory makes ten thousand tiles from the same metal frame, so every tile comes out the same size — like cookies from the same cutter. When shapes are identical, they lock together like puzzle pieces.

How was this book?