Deep Hole Drilling Accuracy: What Tolerances Can You Actually Hold?
Deep Hole Drilling Accuracy: What Tolerances Can You Actually Hold? Every customer who walks through my shop door asks the same question: “What can you actually hold?” The textbook says one thing. My CMM reports say another. Here is what I have measured across thousands of parts over the last decade. Diameter Tolerance by Process and Range I run gun drilling, BTA, and reaming every day. Each process lands in a different IT-grade band, and the diameter range changes what is realistic. ...