April 30, 2016

Rusty Grinder Burrs

Commercial grade steel burrs are made from high-carbon steel, NOT stainless steel as is often mis-stated. Carbon steel will rust if exposed to even slight humidity if not “seasoned” or protected with some sort of oil/lubricant. Rust is virtually non existent in coffee grinders that have had a few pounds of coffee put through them, even after periods of non-use. This is a result of “seasoning of the burrs” similar to cast iron cookware.

Read the entire explanation at Baratza:

https://www.baratza.com/rusty-burrs-really/

We sell replacement burrs for Baratza, Mahlkonig, Compak, Rancilio, Fiorenzato Lelit, Macap and you may notice some rust stains.