Casting technology

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Across
  1. 2. machine used to apply force during casting
  2. 4. It occurs when using short sprue.
  3. 5. a flame used to melt gold alloys
  4. 9. The most appropriate time for investing the wax pattern.
Down
  1. 1. a material added to increase surface energy of the wax.
  2. 3. occurs when the sprue is attached with a 90-degree angle.
  3. 6. Creates a channel to allow the molten wax to escape from the mold.
  4. 7. Last step in casting process.
  5. 8. Creates space to allow for investment expansion.