Tungsten Carbide Wood Working Drill Bits Ⅴ

In last part we know that as tungsten carbide wood working drill bits, twist bits have spiral flutes for removal of chips, and a hole saw is used for cutting larger holes with pilot bit for positioning. In this part we go on to introduce more types of wood working drill bits.

8.Bi-metal Hole Saw

A bi-metal hole saw cuts through wood and metal. A hole saw with a tungsten carbide edge works on heavier materials such as ceramic tile and masonry. A hole saw with a diamond edge also works on tile and masonry, but cuts faster than carbide models.

9. Countersink Bit

 A countersink bit — also called a screw pilot bit — is a specialty bit for drilling in wood. In a single action, the bit can drill pilot, countersink and counterbore holes, allowing you to countersink a fastener and install a plug over the fastener head.

(To be continued. This article is divided into several parts and this is part 5, for part 4 please refer to http://news.chinatungsten.com/en/tungsten-information/80343-ti-10355; for part 6 please refer to http://news.chinatungsten.com/en/tungsten-information/80349-ti-10357)

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