Jigs vs fixtures in production tooling Consider the statement: “Jigs are heavier than fixtures in construction.” Choose the correct evaluation.

Introduction / Context:
In manufacturing, jigs and fixtures are special-purpose tools that improve productivity, accuracy, and interchangeability. Understanding their differences helps select the right device for drilling, milling, turning, and other operations.

Given Data / Assumptions:

• A jig both locates/holds the work and guides the tool (e.g., drill jig).
• A fixture locates/holds the work but does not guide the tool (e.g., milling fixture).
• Heavier construction is needed where cutting forces are higher.

Concept / Approach:
Fixtures are typically used in operations with larger cutting forces (milling, turning, grinding). They must resist bending, vibration, and cutting loads, leading to robust, heavier designs. Jigs, common in drilling, reaming, and tapping, guide the tool with bushings and are usually lighter because forces are relatively lower.

Step-by-Step Solution:
Identify functional difference: jigs guide tools; fixtures do not but must withstand heavy forces.Relate to structural design: heavier bodies are needed to resist milling/turning loads → fixtures tend to be heavier.Evaluate statement: “Jigs are heavier than fixtures” is incorrect.

Verification / Alternative check:
Practical shop tooling shows simple plate or box jigs (relatively light) versus bulky milling fixtures and tombstones designed to absorb high loads.

Why Other Options Are Wrong:
(C), (D), and (E) add conditions unrelated to the fundamental distinction; material choice and batch size do not overturn the general rule that fixtures are heavier.

Common Pitfalls:
Confusing the presence of guide bushings (jigs) with mass; assuming all precision devices must be heavy; overlooking operational cutting loads.

Final Answer:
No