What device is a rapidly spinning horizontal disc coated with diamond powder, used to polish diamond rough?

What device is a rapidly spinning horizontal disc coated with diamond powder, used to polish diamond rough?

• A. Scrubber
• B. Secondary Deposit
• C. Rhinestone
• D. Scaife

Answer: (D)

Polishing rough diamonds uses a flat, fast-spinning wheel that carries abrasive particles. This setup is called a scaife. The horizontal disc is coated with diamond powder, an extremely hard abrasive, which nicks away irregularities on the diamond’s surface as the wheel spins. Over time, the contact with the diamond powder smooths the surface and produces a polished finish. The other options don’t describe a polishing wheel: a scrubber is for cleaning, a secondary deposit isn’t a polishing tool, and rhinestone refers to a fake diamond. So the device described is a scaife.

Polishing rough diamonds uses a flat, fast-spinning wheel that carries abrasive particles. This setup is called a scaife. The horizontal disc is coated with diamond powder, an extremely hard abrasive, which nicks away irregularities on the diamond’s surface as the wheel spins. Over time, the contact with the diamond powder smooths the surface and produces a polished finish. The other options don’t describe a polishing wheel: a scrubber is for cleaning, a secondary deposit isn’t a polishing tool, and rhinestone refers to a fake diamond. So the device described is a scaife.