Tungsten Carbide PCB Drill Bits

Tungsten carbide PCB drill bits are estimated to become much more popular high speed steel bits by a factor of ten or more. Most PCB drill bits are made of highly abrasive fiberglass, which quickly wears steel drills, especially given the hundreds or thousands of holes on most circuit boards. To solve this problem, solid tungsten carbide twist bits, which drill quickly through the board while providing a moderately long life, are almost always used.

Tungsten carbide PCB drill bits typically mount in a collet rather than a chuck, and come with standard-size shanks, often with pre-installed stops to set them at an exact depth every time when being automatically chucked by the equipment.