4.4 subtractive

Question 1

subtractive techniques

Answer 1

cutting away material from its main body to create products

Question 2

5 categories of subtractive techniques

Answer 2

cutting
machining
milling
turning
abrasion

Question 3

machining definition

Answer 3

removing material using power driven tools

Question 4

machining types

Answer 4

turning – block of material is held and spun, as a sharp tool shaves away unwanted parts

milling – material is held on a bed, cutting tool runs over surface of the material

drilling – hole bored into piece of material

Question 5

abrading definition

Answer 5

use of friction to wear down/smooth material

Question 6

abrading types

Answer 6

grinder – abrasive embedded into spinning disc

sander – abrasive attached to moving surface

polishing – using compounds to achieve very smooth surface