Question

In horizontally parted moulds, a draft is required for vertical as well as for horizontal surfaces of a pattern.

(a) True

(b) False

I have been asked this question in an international level competition.

Question is from Pattern Fillets in section Pattern and Pattern Making of Casting-Forming-Welding I

Answer 1

The correct option is (b) False

The explanation is: The draft angle required on the pat¬tern mainly depends on the moulding process and the depth of pattern in the mould. Especially in horizontally parted moulds, only the vertical surfaces require a draft. Horizontal surfaces separate the pattern from the mould automatically during pattern removal.