What is the twist drill?

Twist drill is the most widespread and widely produced type of drill. The term Twist drill generally applies to the type of drill bit used, not to the drill itself. Twist drill bit is a metal cylinder with spiral grooves that roam the spirals. Drills are used in a wide range of projects and fields, from repairing houses to art to extensive construction projects. The bits of twist drills are very cheap and can be discarded when they break or wear. When replacing their replacement, it is necessary to focus or repair much less in time, energy and possibly money. Twist exercises are also very easy to use, allowing most individuals to use them without any special training. Most modern exercises are electrical and motorized, so the user does not have to make more effort than what is necessary to keep the drill straight and point in the right direction.

bits TwistDrill is designed according to the specific purpose for which they are to be used and for the type of material they will drill. The angle of bits is particularly important. Most drills have an angle of 118 degrees at the tip; This angle is suitable for drilling through most materials quite efficiently. More sharp angles around 90 degrees are often used for drilling with soft materials such as soft wood or plastic. Wider angles, often around 150 degrees, are used for drilling with hard materials such as stone and metal.

Depending on its purpose, a twist drill can be made of a wide range of materials. Most of them are made of durable high -speed steel, which can withstand high temperatures without losing its hardness. For a particularly hard work, Diamond can be added to normal drilling steel for greater durability. This, however, rarely does due to high costs.