Garr Tool Drills

A drill mill is a versatile cutting tool that acts like both a drill bit (for plunging holes) and an end mill (for side cutting of slots and contours). This dual functionality reduces tool changes, improves accuracy, and simplifies machining by allowing multiple operations with a single tool, especially in CNC machines.

A jobber drill is the most common, general-purpose twist drill bit in manufacturing. Its intermediate length (flute length 9-14 times the diameter) provides a good balance of drilling depth and rigidity for drilling various materials like steel, metal, plastic, and wood. It typically has a straight shank, two spiral flutes for chip removal, and often a 118-degree point angle. Made primarily of HSS, it's a versatile and widely used drill bit.

A spotting drill is a short, stiff drill bit used to create a precise starting indentation for other drills. This prevents the final drill from wandering, ensuring accurate hole placement, especially on uneven surfaces. It often has a wider point angle (60, 90, or 120) and can sometimes create a starting chamfer. Using a spotting drill improves hole quality and extends the life of subsequent drill bits.