Thursday, May 25, 2017

Hole Saw

We just learned about the Twist Drill Bits.

Another type of drill bit is the Hole Saw.
Sometimes you need to drill a really big hole out of a piece of wood or metal, and this type of bit can grab on to the metal with the smaller bit in the middle called the "pilot drill bit".
Then the teeth on the larger bit can cut the hole for the right shape.

(from: wikipedia - hole saw)

Kid Facts - Blast from the past: Metalwork