CLC Tool Maintenance & Workshop Management 3 — Questions and Answers
Question 1: Which OSHA standard primarily governs lockout/tagout procedures in a carpentry workshop?
- 29 CFR 1910.147 (Correct answer)
- 29 CFR 1926.502
- 29 CFR 1910.212
- 29 CFR 1926.300
Correct answer: 29 CFR 1910.147
29 CFR 1910.147 (Control of Hazardous Energy) establishes lockout/tagout requirements to prevent unexpected energization of machinery during service.
Question 2: When setting up a router table fence, the infeed and outfeed fence sections should be:
- Infeed set back, outfeed flush with the bit's cutting arc
- Both sections set flush with each other and tangent to the bit's cutting arc (Correct answer)
- Outfeed set back, infeed flush with the router table surface
- Both sections adjusted independently for each pass
Correct answer: Both sections set flush with each other and tangent to the bit's cutting arc
For most router table operations both fence faces are coplanar and tangent to the bit's outermost cutting radius, providing consistent support throughout the cut.
Question 3: A table saw's blade guard and splitter (riving knife) primarily protect against:
- Blade deflection and lateral wandering
- Kickback and blade contact (Correct answer)
- Sawdust accumulation on the table
- Motor overload and overheating
Correct answer: Kickback and blade contact
The splitter keeps the kerf open to prevent the wood from pinching the blade and causing kickback, while the guard covers the exposed blade teeth.
Question 4: What does a torque specification on a fastener indicate for tool maintenance purposes?
- The maximum RPM at which the fastener can be driven
- The rotational force required to achieve proper clamping without stripping (Correct answer)
- The minimum drill bit size needed to pilot the hole
- The thread pitch of the fastener
Correct answer: The rotational force required to achieve proper clamping without stripping
Torque specifications define the clamping force needed so that fasteners are tight enough to function properly without being over-tightened and stripped.
Question 5: When grinding a chisel bevel on a bench grinder, overheating the steel is dangerous because it:
- Makes the steel harder and more brittle
- Draws the temper, permanently softening the cutting edge (Correct answer)
- Causes the chisel handle to ignite
- Increases the bevel angle beyond usefulness
Correct answer: Draws the temper, permanently softening the cutting edge
Excessive heat from grinding destroys the heat treatment (temper) of the steel, leaving a soft edge that dulls rapidly and cannot hold a keen edge.
Question 6: What is the primary function of anti-kickback pawls on a table saw?
- They prevent blade deflection on angled cuts
- They grip the workpiece and prevent it from being thrown back toward the operator (Correct answer)
- They reduce tear-out on the bottom face of the cut
- They support narrow rip cuts from tipping
Correct answer: They grip the workpiece and prevent it from being thrown back toward the operator
Anti-kickback pawls have angled teeth that dig into the workpiece if it reverses direction, stopping it before it can be violently ejected toward the operator.
Question 7: Which action extends the life of a router bit most effectively?
- Running the bit at maximum RPM always
- Cleaning pitch buildup regularly and avoiding full-depth climb cuts (Correct answer)
- Using a single large pass to reduce total cutting time
- Storing bits loose in a toolbox drawer
Correct answer: Cleaning pitch buildup regularly and avoiding full-depth climb cuts
Pitch and resin buildup cause heat and friction that dull edges prematurely; multiple shallow passes and avoiding climb cuts reduce stress on the cutting edges.
CLC Tool Maintenance & Workshop Management 3
Which OSHA standard primarily governs lockout/tagout procedures in a carpentry workshop?