Exam Practice Questions And Correct

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

• Which type of steel is commonly used for making cutting tools due to

its hardness and wear resistance?

• Stainless steel
• High-speed steel
• Mild steel
• Aluminum

Rationale: High-speed steel maintains hardness at high temperatures and

is widely used in cutting tools.

• What is the primary purpose of a die in manufacturing?
• To shape molten metal 1 / 4

• To measure parts
• To cut or form material into a specific shape
• To assemble components

Rationale: Dies are used to cut or shape materials, typically in stamping or

forming operations.

• In press operations, what is the function of a punch?
• Holds the die
• Cuts or shapes material by forcing it into a die
• Lubricates the material
• Measures thickness

Rationale: A punch applies force to material to cut or shape it according to

the die cavity.

• What is the typical clearance between a punch and die for a mild steel

sheet?

• 0.5% of sheet thickness
• 10% of sheet thickness
• 5% to 8% of sheet thickness
• 20% of sheet thickness

Rationale: Proper clearance prevents excessive wear on tools and ensures

clean cuts.

• Which grinding method is commonly used to finish hardened tool

steel? 2 / 4

• Belt grinding
• Surface grinding
• Hand filing
• Sand casting

Rationale: Surface grinding provides precise flat surfaces on hardened steel

tools.

• Which type of fit is typically used for assembly requiring sliding

motion?

• Interference fit
• Clearance fit
• Transition fit
• Press fit

Rationale: Clearance fits provide enough space for parts to slide or rotate

freely.

• What is the purpose of heat treating tool steel?
• Make it lighter
• Increase hardness and strength
• Improve corrosion resistance
• Reduce cost

Rationale: Heat treatment improves wear resistance, hardness, and

toughness of tool steel. 3 / 4

• Which machining operation removes material using a rotating cutting

tool?

• Grinding
• Milling
• Broaching
• Stamping

Rationale: Milling uses a rotating cutter to remove material in a controlled

manner.

• What type of die is used for deep drawing sheet metal?
• Blanking die
• Forming die
• Piercing die
• Trimming die

Rationale: Forming dies, especially deep-drawing dies, shape sheet metal

into deep parts.

• Which measuring tool is most accurate for small dimensions in

tool and die work?

• Ruler
• Tape measure
• Micrometer
• Caliper
• / 4