Practice Exam Questions And Correct

Ohio Tool and Die Maker Certification Practice Exam Questions And Correct Answers (Verified Answers) Plus Rationales 2025|2026 Q&A | Instant Download Pdf

1. A tool and die maker is primarily responsible for:

• Installing HVAC systems
• Designing and maintaining production molds and dies
• Managing warehouse inventory
• Performing electrical wiring

Answer: B

Rationale: Tool and die makers design, build, and maintain tooling

used in manufacturing processes.

• Which metal is most commonly used for die blocks due to its wear

resistance?

• Aluminum 1 / 3

• Brass
• Tool steel
• Lead

Rationale: Tool steels are specifically formulated for durability and

wear resistance in tooling applications.

3. The process of slowly cooling heated metal to soften it is called:

• Hardening
• Tempering
• Annealing
• Quenching

Rationale: Annealing reduces hardness and increases ductility for

machining.

4. A micrometer reads in:

• Fractions of an inch only
• Degrees
• Pounds
• Thousandths of an inch

Rationale: Standard micrometers measure to 0.001" accuracy.

• Which machine tool is best used for creating round parts?
• Shaper
• Grinder
• Saw 2 / 3

• Lathe

Rationale: A lathe rotates workpieces to produce cylindrical shapes.

• Which cutting fluid is commonly used for machining steel?
• Water only
• Vegetable oil
• Sulfur-based cutting oil
• Grease

Rationale: Sulfurized oils provide lubrication and heat control when

cutting steel.

7. A surface plate is used to:

• Hold parts during welding
• Provide a reference flat surface for inspection
• Buff parts
• Store tooling

Rationale: Surface plates serve as precise, flat reference standards.

• Which is a common heat treatment to increase hardness?
• Blanking
• Quenching
• Broaching
• Facing

Rationale: Quenching rapidly cools heated metal to make it hard.

9. In orthographic projection, hidden edges are shown with:

• Solid thick lines
• / 3