'high speed steel' (HSS), these are suitable for drilling most types of material, when drilling metal the HSS stands up to the high temperatures.They can be used on timber, metal, plastics and similar materials. The front edges cut the material and the spirals along the length remove the debris from the hole and tend to keep the bit straight. Usuallyreferred to as twist drills, twist bits are probably the most common drilling tools used by the handyman with either a hand or electric drill. A sharp bit will also give a cleaner hole. Learning how to sharpen drill bits is cost effective, it better to keep a bit sharp by occasional sharpening rather than waiting until it becomes really blunt.Ī sharp bit cuts better with less effort whether used in a power or hand drill. Good quality drill bits can be expensive, so take care of them, keep them in a case or box if possible, rather than allowing them to roll around loose in a toolbox where the cutting edges may be damaged. Many jobs around the house require a hole of some kind to be drilled - whether it is putting up a shelf, building a cabinet or hanging a light fitting.įor basic requirements, a set of high-speed steel twist drills and some masonry bits will probably be sufficient for the average handyman.īut for more sophisticated jobs/material, others bits will be required - perhaps larger, or designed for a specific material/purpose.

To drill a satisfactory hole in any material, the correct type of drill bit must be used it must be used correctly and be sharpened as appropriate. Twist bit - screwdriver bit - masonry - spur point - bullet pilot - countersink - tile - flat wood - hole saw - forstner - wood auger

China different types of drill bits