Ch.3

Question 1

Core print

Answer 1

used to support and secure the Core in the mold cavity

Question 2

Core

Answer 2

Used for inserting the metal when the internal component can be casted normall.

Question 3

Macthplate Pattern

Answer 3

Pattern where metal is casted on a single plate that is attached to mold. it is attached on the cope and drage side on the same plate which is attached

Question 4

Cope and Drag Pattern

Answer 4

where the metal is inserted onto two separate ends or attachment pins. when molding is complete that is when they are combined

Question 5

Investment casting

Answer 5

casting that involves using a pattern made out of wax. pattern is made in the exact shape the item will be casted and out of a ceramic coating.

Question 6

Draft

Answer 6

Used to better facilate pickign up the metal.

Question 7

what material will the chaplet be made out of

Answer 7

whatever material the casting is made out of as it will be part of the final cast product.

Question 8

true or false a two-piece pattern is a loose pattern.

Answer 8

True.

Question 9

Where should the parting line be ideally?

Answer 9

straight and between the two parts drag and cope.

Question 10

How does the design of the gating system affect the metal size wide?

Answer 10

a short gate system can affect the metal by shrinking it as the metal can start to solidify before it reaches the mold part.

Question 11

What are pros and cons of wood as pattern material

Answer 11

pros. low cost and low eight. cons low abrasive resitnace wears out pretty quickly so can’t be used for a long time.

Question 12

Metal pro’s and cons

Answer 12

Pros: high durability and good wear resitance, and good surface finishcons: often high weight.

Question 13

what metal is most commonly used for pattern making

Answer 13

Alumninum

Question 14

Plastic pros and cons for pattern making

Answer 14

pros: easy to mahcine and does not shrink as much, produces precise dimensional tolerances. cons: does not work well with heat.