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Covington Engineering

Covington 8 Inch Grinder Polisher

Covington 8 Inch Grinder Polisher


Regular price
Price: $1,749.00
Regular price
List Price:
Sale price
Price: $1,749.00

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If your item is on back-order or unavailable, we will reach out to you via email or phone and void the pre-authorization if you so desire. If your item(s) are available for shipment, we will process the charges and submit the order for shipment.

Order Shipment

If your order is in stock and we process the charges to your credit card, it will ship within the following time frame according to brand, from the date of your order:

Lightning Lap: 1-2 business days
Crystalite: 2-5 business days
Gemini: 5-15 business days
Covington Engineering: 1-5 business days
CabKing, Hi-Tech Diamond, Inland and Tumble-Bee: 1-5 business days

Please keep in mind that processing times may be a little longer during holiday periods. Shipments can also be delayed due to supply-chain issues with our manufacturers. We will inform you if there is any significant delay expected.

We will send you tracking information within 24 hours of your order leaving the warehouse to the e-mail address you provided when checking out. If you do not receive tracking information from us within six business days of your order, feel free to follow up with us at


Please inspect the packaging of your item(s) when they arrive, if you notice any damage you should make note of it when signing for delivery. If your item(s) do arrive damaged, please send photos to and we will process an insurance claim on your behalf.

Covington 8 Inch Grinder Polisher

Although this item is currently out of stock, you can still order it and it will ship in 10 - 12 weeks. If interested, please contact us.

The Covington 8 Inch Grinder Polisher is the perfect addition to any lapidary workshop. With its powerful 1/2 hp motor and heavy-duty ball bearings, this grinder polisher is built to last. The rustproof aluminum-topped Lam-I-Cushion base ensures that your machine will remain stable and sturdy, while the adjustable cab and wheel rest allow for easy customization to your specific needs.

This machine features two 8" x 1-1/2" metal-bond diamond grinding wheels (100g & 220g) and two 3" x 8" diamond cloth belts (325g & 1,200g) to help you achieve the perfect finish every time. The 8" expandable drum and 8" aluminum head for polishing make it easy to work on a variety of projects, from shaping rough stones to polishing your finished pieces.

The water valve takes 1/4" OD plastic tubing for gravity water flow or 1/4" copper tubing for pressure systems. Spray nozzles under the hood wet the entire wheel face.

The Covington 8 Inch Grinder Polisher also comes with a 5-gram syringe of 50,000 mesh diamond compound and a 2-ounce bottle of extender fluid, providing you with all the materials you need to get started. Additionally, the sample kit, including polish powder, brush, dop sticks, and wax, ensures that you can experiment with different techniques and materials.

This machine is built with heavy-duty powder-coated aluminum castings, a hood, and a belt guard, making it both durable and attractive. The speed control allows for easy adjustments, and the 8 rpm-changes ensure that you have complete control over the speed of your work. Despite its powerful motor, this grinder polisher runs quietly, allowing you to work in peace.

With a 36" x 24" footprint, this machine is compact enough to fit into any workshop, while still providing ample space to work on your projects.

The Covington 8 Inch Grinder Polisher comes with a book about using diamond abrasives, as well as instructions to help you get started right away. Additionally, it is backed by a product guarantee, giving you peace of mind that your investment is protected.


  • Two 8" x 1-1/2" metal-bond diamond grinding wheels (100g, & 220g)
  • Two 3" x 8" diamond belts (325g, & 1,200g)
  • One 8" x 1"-14RH aluminum head with leather disc attached
  • A 5-gram syringe of 50,000 mesh diamond compound
  • A 2-ounce bottle of extender fluid
  • Sample kit (polish powder, brush, dop sticks, and wax)
  • A book about using diamond abrasives
  • 36" x 24" Footprint
  • Rustproof Aluminum-Topped Lam-I-Cushion Base
  • Heavy-Duty Ball Bearings, Neoprene Sealed and Greased for Life
  • Heavy-Duty Powder Coated Aluminum Castings, Hood, and Belt Guard
  • Adjustable Cab and Wheel Rest
  • 8" Expandable Drum
  • 8" Aluminum Head for Polishing
  • Speed Control with 8 rpm-Changes
  • 1/2 hp, Heavy Duty Motor
  • Runs Quietly
  • Instructions
  • Product guarantee

Please note: This machine weights 200 lb. If you need lift-gate service, that will be charged extra. Please email for a quote.



Out of stock