Technician A says that a hole can be drilled in cast iron using no lubricant. Technician B says that a hole can be drilled in aluminum without the use of a lubricant. Who is right?

Question

Quizplus · Accepted Answer

Both technician A and B are correct. Cast iron does not require a lubricant to be drilled and aluminum can be drilled without the use of a lubricant as well. However, it is generally recommended to use a lubricant when drilling any material to prolong the life of the drill bit and achieve better results.

Technician a Says That a Hole Can Be Drilled in Cast