Understanding End Mill Coatings The Purpose of Coatings Extend Tool Life, Wear Resistance, minimize built up edge, Faster Speeds & Feeds, increase productivity. The most important thing to understand about coating is that it’s NOT just about the picking the right coating selection (AlCrN, AlTiN, TiAlN, TiCN, TiB2, ZrN, etc). It’s equally important to pick…