Why does washing knives in the dishwasher dull them?

Question

Why does washing knives in the dishwasher dull them?

In: 890

Answer 1

Furthermore, knives with rivets in the handle shouldn’t be washed in the dishwasher. The handle material and the steel have different densities and under the heat of the drying will swell at different rates. This will eventually loosen the rivets.