Question

How does pattern vary in size with casting?

(a) Pattern is larger in size

(b) Casting is larger in size

(c) Both have same size

(d) Size depends on other factors

This question was posed to me in an online quiz.

The above asked question is from Pattern Allowances in chapter Preventive Maintenance in Foundries & Metal Casting Process of Casting-Forming-Welding I

Answer 1

The correct option is (a) Pattern is larger in size

To elaborate: Patterns are duplicates of the objects we desire to cast. These patterns can be made up of plastics, metals or wood. A pattern is slightly larger in size as compared to casting because a pattern carries various allowances and the core prints.