Measurement
Mills
Lathes
Safety
Tooling
100

This is the term for the smallest unit of measurement that a micrometer can accurately measure. 

What is a thousandths of an inch?

100

The 3 main axis' used on a manual mill.

What is X, Y, Z?

100

The part of the lathe that contains the gearing. 

What is headstock?

100

This type of protective gear must be worn at all times in the machine shop to protect your eyes from flying debris.

What are safety glasses (or goggles)?

100

This type of chuck is self-centering and commonly used to hold round stock.

What is a 3-jaw chuck?

200

This device uses a dial to measure small distances, typically in increments as small as 0.001 or 0.0005 of an inch.

What is an indicator?

200

This component of a manual mill moves up and down to engage the cutting tool with the workpiece. 

What is the quill?

200

The operation that removes material from the end of the stock.

What is facing?

200

This feature on a machine helps to prevent accidental contact with moving parts and must never be removed or bypassed.

What is a machine guard?

200

This tool is used to create a hole before threading, ensuring the proper diameter for threading taps.

What is a tap drill?

300

This is the term for the allowable variation in a dimension, often specified on a print. 

What is tolerance?

300

On a mill, this devise is used to hold and position the workpiece during machining operations.

What is a vise?

300

The angle set on the compound when turning threads.

What is 29 degrees?

300

In the event of an emergency, you should know the location of this device, which is used to shut off electrical power to all machines in the shop.

What is an emergency stop (or E-stop) switch?

300

This tool, with multiple cutting edges, is commonly used in vertical milling machines to remove material.

What is an end mill?

400

This measuring tool, with an adjustable jaw, is used to measure internal, external, and depth dimensions. 

What is a caliper?

400

The milling method preferred on a manual mill.

What is conventional milling?

400

The two axis' used on an engine lathe.

What is x and z?

400

When handling these objects, used to remove burrs and sharp edges from metal, always hold them with a handle to avoid injury.

What are files?

400

The angle formed between the cutting edge of a tool and the workpiece material is known by this term.

What is the rake angle

500

This method is used to check the pitch diameter using pins and a micrometer. 

What is the 3-wire method?
500

This common manual milling operation involves using the cutting tool to remove material from the surface of a workpiece to create flat surfaces. 

What is face milling?

500
The RPM set for a 3 inch diameter piece at a cutting speed of 80FPM.

What is 102 RPM?

500

Before performing maintenance or adjustments on a machine, always ensure this action has been taken to prevent accidental startup.

What is lockout/tagout?

500

This tool is most commonly used on a lathe and has a 60 degree angle on the end.

What is a threading tool?