Foundry terminology — three-part mould patterns When a pattern is made in three parts, the top part of the mould assembly is called the __________.

Introduction / Context:
In sand moulding, the flask (or mould box) may consist of two or three parts depending on the complexity of the casting. Understanding standard names improves communication between design and foundry teams.

Given Data / Assumptions:

• Three-part mould box is used (top, middle, bottom sections).
• Pattern may require a cheek to split complex geometry.
• Standard foundry nomenclature is assumed.

Concept / Approach:
The conventional names are: top part = cope, bottom part = drag, and the middle section (if present) = cheek. Core prints and sprue are separate features used for core location and metal entry, not flask parts.

Step-by-Step Solution:
Identify the top section term: cope.Identify the bottom section term: drag.Identify the intermediate section term: cheek.Therefore, for the top part, select 'cope'.

Verification / Alternative check:
Any standard foundry text or shop documentation labels the three-part assembly as cope-cheek-drag in that order from top to bottom.

Why Other Options Are Wrong:
Cheek refers to the middle section; drag refers to the bottom; core print and sprue are not flask parts.

Common Pitfalls:
Confusing pattern components with flask components; assuming sprue is a flask part; overlooking that two-part moulds do not include a cheek.

Final Answer:
cope