Safety puzzle

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Across
  1. 3. two
  2. 7. Powerful
  3. 9. all the time
  4. 12. lowers the guard
  5. 14. not mess around
  6. 15. might get caught on machine
  7. 16. Personal protective equipment
  8. 19. if you would like
  9. 20. less movement
Down
  1. 1. low
  2. 2. what do you sand with
  3. 4. do not
  4. 5. follow all
  5. 6. to be tied back
  6. 8. pieces of wood
  7. 10. sleeves
  8. 11. Less powerful
  9. 13. to be tied
  10. 17. don't mess with
  11. 18. it sands the wood in a circle