CERTIFIED TOOL AND DIE
MAKER JOURNEYMAN
CERTIFICATION EXAM AND
LATEST MOCK PRACTICE SET
230 Questions with Answers and Detailed Rationales
100 PERCENT GUARANTEED PASS
INSTANT DOWNLOAD ANSWERS INCLUDED
IMPORTANCE OF THIS DOCUMENT
This comprehensive examination preparation guide has been meticulously developed to help you succeed in the
CERTIFIED TOOL AND DIE MAKER JOURNEYMAN CERTIFICATION EXAM AND ACCURATE ANSWERS
WITH DETAILED RATIONALES | ALL CURRENTLY TESTING. It contains 230 carefully selected questions that
reflect the most current exam content and testing strategies. Each question is accompanied by a correct answer
and a detailed rationale that explains the underlying pathophysiology, pharmacology, or clinical reasoning.
Self-Assessment – Test your knowledge and Exam Preparation – Familiarize yourself with the
identify areas requiring further question format and content
study areas
Concept Reinforcement – Deepen your Confidence Building – Develop test-taking
understanding through strategies and reduce
evidence-based exam anxiety
rationales
Time Management – Practice answering
questions under simulated
exam conditions
Review Summary 230 Questions
Foundations - Application - Certified TOOL AND DIE Maker Journeyman Certification AND Accurate WITH
Detailed Rationales ALL Currently Testing TOOL AND DIE Making Graduate / Journeyman Level
All answers with rationales
,Table of Contents
Section A - Blueprint Reading AND Section B - Metallurgy AND HEAT
Interpretation Treatment
Questions 1 to 58 Questions 59 to 116
Section C - Precision Measurement Section D - Machine TOOL Operations
AND Inspection Lathe MILL Grinder
Questions 117 to 174 Questions 175 to 230
,Section A - Blueprint Reading AND Interpretation
Q1.
A progressive die produces a part with a critical hole that must be concentric within 0.001
inch TIR. The punch and bushing are made of A2 tool steel hardened to HRC 60. Which of
the following is the most likely cause of progressive loss of concentricity after 10,000
strokes?
A. Wear of the guide bushings due to B. Work hardening of the strip material
inadequate lubrication causing increased stripping force
C. Fatigue cracking of the punch tip due to D. Thermal expansion of the die shoe from
cyclic loading frictional heat
Correct: A - Wear of the guide bushings due to inadequate lubrication
Rationale:Wear in guide bushings introduces clearance, allowing lateral movement of the
punch, which degrades concentricity. Work hardening (B) affects stripping force but not
alignment; fatigue cracking (C) would cause breakage, not gradual misalignment; thermal
expansion (D) is usually uniform and less likely to cause progressive loss of concentricity over
many strokes.
Q2.
In a wire EDM operation, a 0.010-inch diameter brass wire is used to cut a 2-inch thick D2
tool steel block. The recommended offset is 0.005 inch per side. After the first pass, the
measured slot width is 0.0205 inch. Which adjustment is most appropriate to achieve the
desired slot width of 0.020 inch?
A. Increase the wire tension by 10% B. Reduce the offset to 0.0045 inch
C. Decrease the pulse-on time D. Increase the flushing pressure
Correct: C - Decrease the pulse-on time
Rationale:The slot width is larger than desired due to excessive spark gap from high energy.
Decreasing pulse-on time reduces spark energy, narrowing the kerf. Wire tension (A) affects
straightness, not width; offset (B) is a compensation in the path, not a process adjustment;
flushing pressure (D) affects debris removal, not kerf width.
Q3.
A die caster is experiencing excessive soldering (aluminum sticking to the die) on a
complex cavity. The die material is H13 tool steel, and the casting alloy is A380 aluminum.
Which of the following surface treatments would most effectively mitigate soldering?
A. Nitriding at 525°C for 8 hours B. Titanium nitride (TiN) coating via PVD
Page 3
, Section A - Blueprint Reading AND Interpretation
C. Cryogenic treatment at -196°C followed D. Chrome plating with a thickness of
by tempering 0.0005 inch
Correct: B - Titanium nitride (TiN) coating via PVD
Rationale:TiN coating provides a non-wetting barrier that reduces chemical affinity between
aluminum and the die surface. Nitriding (A) increases surface hardness but does not prevent
chemical bonding; cryogenic treatment (C) improves wear resistance but not soldering;
chrome plating (D) can spall off due to thermal cycling and is less effective than TiN.
Q4.
When grinding a carbide die insert with a diamond wheel, the operator notices burning
and surface cracks. The wheel is a 150-grit resin-bond diamond wheel running at 5000
SFPM. Which change is most likely to eliminate burning?
A. Increase the wheel speed to 6000 SFPM B. Reduce the depth of cut from 0.001 to
0.0005 inch per pass
C. Switch to a vitrified bond diamond wheel D. Apply a water-soluble coolant at a higher
flow rate
Correct: D - Apply a water-soluble coolant at a higher flow rate
Rationale:Burning indicates excessive heat; increasing coolant flow improves heat
dissipation. Higher wheel speed (A) increases heat generation; reducing depth of cut (B) may
help but is less effective than addressing coolant; vitrified bond (C) is more porous but doesn't
directly address heat removal.
Q5.
In a compound die setup, the punch-to-die clearance for a blanking operation on
0.060-inch thick low-carbon steel is specified as 6% of stock thickness per side. The die
opening measures 2.500 inches. What should be the punch diameter?
A. 2.4928 inches B. 2.5072 inches
C. 2.4880 inches D. 2.5120 inches
Correct: A - 2.4928 inches
Rationale:Clearance per side = 0.060 × 0.06 = 0.0036 inch. For blanking, the punch is
smaller than the die: punch diameter = 2.500 - 2(0.0036) = 2.4928 inches. Option B is for
piercing where punch is larger; C and D are incorrect calculations.
Q6.
A mold designer specifies a 3-degree draft angle on a core for an injection-molded
polycarbonate part. The part experiences sticking during ejection. Which modification
would most effectively reduce sticking without changing the draft angle?
Page 4
MAKER JOURNEYMAN
CERTIFICATION EXAM AND
LATEST MOCK PRACTICE SET
230 Questions with Answers and Detailed Rationales
100 PERCENT GUARANTEED PASS
INSTANT DOWNLOAD ANSWERS INCLUDED
IMPORTANCE OF THIS DOCUMENT
This comprehensive examination preparation guide has been meticulously developed to help you succeed in the
CERTIFIED TOOL AND DIE MAKER JOURNEYMAN CERTIFICATION EXAM AND ACCURATE ANSWERS
WITH DETAILED RATIONALES | ALL CURRENTLY TESTING. It contains 230 carefully selected questions that
reflect the most current exam content and testing strategies. Each question is accompanied by a correct answer
and a detailed rationale that explains the underlying pathophysiology, pharmacology, or clinical reasoning.
Self-Assessment – Test your knowledge and Exam Preparation – Familiarize yourself with the
identify areas requiring further question format and content
study areas
Concept Reinforcement – Deepen your Confidence Building – Develop test-taking
understanding through strategies and reduce
evidence-based exam anxiety
rationales
Time Management – Practice answering
questions under simulated
exam conditions
Review Summary 230 Questions
Foundations - Application - Certified TOOL AND DIE Maker Journeyman Certification AND Accurate WITH
Detailed Rationales ALL Currently Testing TOOL AND DIE Making Graduate / Journeyman Level
All answers with rationales
,Table of Contents
Section A - Blueprint Reading AND Section B - Metallurgy AND HEAT
Interpretation Treatment
Questions 1 to 58 Questions 59 to 116
Section C - Precision Measurement Section D - Machine TOOL Operations
AND Inspection Lathe MILL Grinder
Questions 117 to 174 Questions 175 to 230
,Section A - Blueprint Reading AND Interpretation
Q1.
A progressive die produces a part with a critical hole that must be concentric within 0.001
inch TIR. The punch and bushing are made of A2 tool steel hardened to HRC 60. Which of
the following is the most likely cause of progressive loss of concentricity after 10,000
strokes?
A. Wear of the guide bushings due to B. Work hardening of the strip material
inadequate lubrication causing increased stripping force
C. Fatigue cracking of the punch tip due to D. Thermal expansion of the die shoe from
cyclic loading frictional heat
Correct: A - Wear of the guide bushings due to inadequate lubrication
Rationale:Wear in guide bushings introduces clearance, allowing lateral movement of the
punch, which degrades concentricity. Work hardening (B) affects stripping force but not
alignment; fatigue cracking (C) would cause breakage, not gradual misalignment; thermal
expansion (D) is usually uniform and less likely to cause progressive loss of concentricity over
many strokes.
Q2.
In a wire EDM operation, a 0.010-inch diameter brass wire is used to cut a 2-inch thick D2
tool steel block. The recommended offset is 0.005 inch per side. After the first pass, the
measured slot width is 0.0205 inch. Which adjustment is most appropriate to achieve the
desired slot width of 0.020 inch?
A. Increase the wire tension by 10% B. Reduce the offset to 0.0045 inch
C. Decrease the pulse-on time D. Increase the flushing pressure
Correct: C - Decrease the pulse-on time
Rationale:The slot width is larger than desired due to excessive spark gap from high energy.
Decreasing pulse-on time reduces spark energy, narrowing the kerf. Wire tension (A) affects
straightness, not width; offset (B) is a compensation in the path, not a process adjustment;
flushing pressure (D) affects debris removal, not kerf width.
Q3.
A die caster is experiencing excessive soldering (aluminum sticking to the die) on a
complex cavity. The die material is H13 tool steel, and the casting alloy is A380 aluminum.
Which of the following surface treatments would most effectively mitigate soldering?
A. Nitriding at 525°C for 8 hours B. Titanium nitride (TiN) coating via PVD
Page 3
, Section A - Blueprint Reading AND Interpretation
C. Cryogenic treatment at -196°C followed D. Chrome plating with a thickness of
by tempering 0.0005 inch
Correct: B - Titanium nitride (TiN) coating via PVD
Rationale:TiN coating provides a non-wetting barrier that reduces chemical affinity between
aluminum and the die surface. Nitriding (A) increases surface hardness but does not prevent
chemical bonding; cryogenic treatment (C) improves wear resistance but not soldering;
chrome plating (D) can spall off due to thermal cycling and is less effective than TiN.
Q4.
When grinding a carbide die insert with a diamond wheel, the operator notices burning
and surface cracks. The wheel is a 150-grit resin-bond diamond wheel running at 5000
SFPM. Which change is most likely to eliminate burning?
A. Increase the wheel speed to 6000 SFPM B. Reduce the depth of cut from 0.001 to
0.0005 inch per pass
C. Switch to a vitrified bond diamond wheel D. Apply a water-soluble coolant at a higher
flow rate
Correct: D - Apply a water-soluble coolant at a higher flow rate
Rationale:Burning indicates excessive heat; increasing coolant flow improves heat
dissipation. Higher wheel speed (A) increases heat generation; reducing depth of cut (B) may
help but is less effective than addressing coolant; vitrified bond (C) is more porous but doesn't
directly address heat removal.
Q5.
In a compound die setup, the punch-to-die clearance for a blanking operation on
0.060-inch thick low-carbon steel is specified as 6% of stock thickness per side. The die
opening measures 2.500 inches. What should be the punch diameter?
A. 2.4928 inches B. 2.5072 inches
C. 2.4880 inches D. 2.5120 inches
Correct: A - 2.4928 inches
Rationale:Clearance per side = 0.060 × 0.06 = 0.0036 inch. For blanking, the punch is
smaller than the die: punch diameter = 2.500 - 2(0.0036) = 2.4928 inches. Option B is for
piercing where punch is larger; C and D are incorrect calculations.
Q6.
A mold designer specifies a 3-degree draft angle on a core for an injection-molded
polycarbonate part. The part experiences sticking during ejection. Which modification
would most effectively reduce sticking without changing the draft angle?
Page 4
