Thursday, May 18, 2017

Twist Drill Bits

We just learned a little about Drill Bits.

One type of drill bits is the Twist Drill Bit.
For these bits, there is a spiral cut along the bit, and the taller that spiral is, the faster the bit is meant to go.
The more compact and shorter the spiral is, the slower the bit goes.

At the end of the bit is the "tip", and there are many different types of tips.
Some bits have a "brad point" which is a tiny little spiky point that holds on to the metal or wood so the bit doesn't slide around when it is drilling.
Some tips are very flat, and some are very pointy, depending on what you are trying to drill.

(from: wikipedia - drill bit)

Kid Facts - Blast from the past: Typhoon