Do you have to prime a canvas for oil painting?

Related questions

1. What happens if water gets in your oil?
2. What is the mixture of oil and water called?
3. Can I add water to oil?
4. Do you need linseed oil for oil painting?
5. Does oil and vinegar mix?
6. Does oil paint dry darker?
7. Do you need mediums for oil painting?
8. What is oil painting ground?
9. Is ice wet or dry?
10. Do oil paints go bad?

Tags

1. #unprimed
2. #surface
3. #canvas
4. #chemicals
5. #acrylics
6. #primed
7. #would
8. #sealing
9. #could
10. #priming
11. #paint
12. #usually
13. #sealed
14. #requires
15. #while
16. #absorbent
17. #directly
18. #because
19. #otherwise