Gun drills are specialized cutting tools designed for creating deep, straight holes in materials, particularly those with a high length-to-diameter ratio. They feature a long, slender drill bit with a single cutting edge and a central channel for coolant delivery and chip evacuation. This design allows for precision drilling at significant depths, exceeding the capabilities of standard twist drills.
Expansion reamers, also known as adjustable reamers, are cutting tools used to precisely enlarge existing holes in various materials. They feature a tapered screw that allows for fine adjustments to the reamer's diameter, enabling users to expand or contract the tool to achieve the desired hole size. This makes them versatile for achieving accurate hole dimensions and smoother finishes.
