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Article: Scaif


Definition and Invention of Scaif

  • A scaif is a polishing wheel used in the diamond cutting industry.
  • It was invented in 1456 by Lodewyk van Bercken.
  • The scaif is infused with a mixture of olive oil and diamond dust.
  • It allows for the symmetrical polishing of diamond facets.
  • This invention revolutionized the diamond cutting industry.

Structure and Function of Scaif

  • The scaif consists of a hard disk parallel to the floor.
  • The disk is rotated like a potter's wheel.
  • A film of olive oil and diamond dust is placed on the top surface.
  • A circular frame surrounds the disk to catch the spun-off oil.
  • A mechanical arm hovers above the disk to hold the diamond.

Polishing Process with Scaif

  • The mechanical arm is finely adjusted to position the diamond for polishing.
  • As the facets are polished, more diamond dust is produced.
  • The supply of diamond dust is replenished during the polishing process.
  • The angles of the polished facets reflect light optimally.
  • The use of scaif enhances the popularity of diamonds.

External Links

  • 'The Diamond Invention. Chapter 11' by Edward Jay Epstein.
  • 'Diamond cutting. Thank you, Lodewyk van Berken' by Jeffrey Blancq, April 21, 2006.
  • Retrieved from

    Scaif Data Sources

    Reference URL
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