Question

Which of the following ranges show the approx range of finishing depth (in mm) required for finished casting?

(a) 2 to 20

(b) 20 to 30

(c) 30 to 35

(d) 35 to 40

I got this question in an international level competition.

My question is taken from Finishing Patterns & Storing of Patterns topic in division Pattern and Pattern Making of Casting-Forming-Welding I

Answer 1

The correct choice is (a) 2 to 20

The best explanation: The range of finishing depth basically depends on dimensions, the type of casting material and the surface finish required, but for the approximation, it comes in the range of 2 to 20 mm. In this range, casting can achieve greater surface smoothness and shiny surface with good appearance.