Question

Dowel pins, Jigs and fixtures are all used to join which of the following patterns.

(a) Single piece

(b) Match plate

(c) Two piece

(d) Gated Pattern

The question was asked during an interview for a job.

Asked question is from Types of Patterns topic in portion Pattern Materials & Moulding Sand Tests of Foundry and Forging

Answer 1

The correct choice is (c) Two piece

To explain I would say: The two piece patterns are made using one single pattern cut in two halves. Once is placed in the cope and other in the drag. To facilitate the proper alignment of the of the halves in the cope and the drag, they are joined with the jigs, fixtures and dowel pins.