Polymers manufacturing methods - One-off / Low volume production

Question 1

Is CNC machining Subtractive or Additive manufacturing?

Answer 1

Subtractive.

Question 2

Is 3D printing Subtractive or Additive manufacturing?

Answer 2

Addidive.

Question 3

Name 4 manufacturing methods which are One-off / Low volume production.

Answer 3

• CNC machining
• 3D printing
• GRP layup
• GRP moulding

Question 4

What is the difference between GRP layup and GRP moulding?

Answer 4

GRP layup takes more time and it more intricate, as the glass fibres and resin are applied by hand separately, however GRP moulding uses larger sheets and is less intricate for a similar effect.

Question 5

Which process is more labour-intensive, GRP moulding or GRP layup?

Answer 5

GRP layup.