FEATURE
drill
Drill, Bore, Ream, Oh Why!?
Drilling, boring, and reaming are successive hole-making operations. Drilling creates the initial hole, boring improves its position, straightness, and roundness, and reaming finishes a properly prepared hole to a close dimensional tolerance.
Basic Machining Tools – Terminology
An introduction to common machine-shop tools and their purposes, including end mills, drills, taps, and reamers. Drill selection depends on factors such as the workpiece material, hole depth, required tolerance, tool material, coating, and point geometry.