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Across
  1. 4. Natural form of glass created by volcanoes
  2. 6. Used to pick up paint chips
  3. 10. Composed of a binder and pigments and other additives that are dissolved in a solvent
  4. 12. Signs or indications of something
  5. 13. Contains lead oxide that makes it denser
  6. 16. A measure of how much light an object shows
  7. 17. A hard, brittle, amorphous material
  8. 20. Change the temperature at which formers melt during the glass manufacturing process
Down
  1. 1. The actual color of the surface
  2. 2. Most basic, common, inexpensive, easy to make glass
  3. 3. Paint data query
  4. 5. Old car paint which has hardened enough to be cut and polished
  5. 7. Strengthen the glass and make it water resistant
  6. 8. Encircled impact and always start on the same side as the destructive force
  7. 9. Used as a preparatory coat on an unpainted surface
  8. 11. Improves gloss, durability, and appearance
  9. 14. Coloring matter of paint
  10. 15. Fracture produced first, looks like spider webs that spread outward from the impact
  11. 18. A small part intended to show what the whole is like
  12. 19. Make up the bulk of glass