Tungsten Carbide Wood Working Drill BitsⅡ

In last part we know that tungsten carbide wood working drill bits, such as a brad-point bit, are characterized of a raised spur or sharp point at the end to precisely position and stabilized the bit. Here we introduce more types of wood working drill bits.

2. Auger Bit: An Auger bit has a screw tip that starts the hole and pulls the bit through the work piece to quickly create a clean hole. As with the brad-point bit, large flutes help remove chips and dust. An auger bit with a hollow center provides even more chip removal, allowing for deeper boring; one with a solid center is stronger and more rigid.

3. Self-Feed Bit: A self-feed bit bores through wood. Like the auger bit, a screw at the tip helps position the bit and draws it through the work piece. It doesn't have the standard flutes of a twist bit, so you need to pull the bit back periodically to clear away chips and dust.

(To be continued. This article is divided into several parts and this is part 2, for part 1 please refer to http://news.chinatungsten.com/en/tungsten-information/80238-ti-10315)

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