Timber Puzzle Crossword

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Across
  1. 3. You may have heard this word before 'paint'
  2. 5. Common sign of a nerd
  3. 6. while being a tool, scorpions, crabs, and other animals have this as well!
  4. 9. Relies a lot on friction, wouldn't hurt to stick this to a block though!
  5. 10. They're so close, but will never meet.
  6. 11. stepping on rusty ones may give you tetanus
  7. 13. A little bit lonely without its friends width and height
  8. 15. A small unit of measurement that's commonly on rulers (not centimetres)
  9. 16. A little bit lonely without its friends length and height
  10. 17. Literally just a grip.... for pistols (seriously)
  11. 19. A very common thing used for writing
  12. 20. A little bit lonely without its friends length and width
Down
  1. 1. It's all about right angles
  2. 2. Goes really really really fast and gives a smooth finish
  3. 4. Works well with nails!
  4. 6. I guess it's white and sticky, not much else to say about it.
  5. 7. a very special quadrilateral
  6. 8. Sanding paper stuck to a handy block
  7. 12. Good building material with many uses
  8. 14. In one way, it's extremely strong. In another, it caves in easily.
  9. 18. The inclined version of this is actually a machine