Drilling should include

• measuring and marking the metal for drilling using a center punch
• selecting the correct bit
• selecting and applying necessary cooling lubricants.

Process/Skill Questions:

• How does one lay out a hole to be drilled?
• What are the types of drill bit shanks?
• What determines the size of the bit to use when drilling a hole in metal?
• What is the purpose of center-punch marking before drilling?