Covington - 12" Flat Lap Grinder

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4 reviews
Sale price$ 1,950.75 Regular price$ 2,295.00
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  • Optional Water Supply Feeds Through Shaft Center
  • Aluminum Water Manifold Controls Fluid Flow
  • Heavy Welded Steel Chassis with Stainless Steel Catch Pan
  • 1hp, 3 Phase, With Optional Wash-Down Variable Speed Motor and Controller
  • Available in 110V or 220V, 50Hz or 60Hz
  • Shaft Will Accept 5/8"-11RH Male Accessories
  • 1" Stainless Steel Shaft with Welded Flange Heavy Duty Ball Bearing


  • Shipping Weight: 195 lbs. 
  • Size: 25" x 25" x 27"


The New User Kit Provides the essentials to get your home studio up and running.

  • 1 x Submersible Pump with 10' x 1/4" pipe
  • 1 x 100 Grit Grinding Disc (Nickel Bonded)
  • 1 x 270 Grit Grinding Disc (Nickel Bonded)
  • 1 x 325 Resin Bonded Disc
  • 1 x Felt Polishing Disc
  • 1 x 1lb of Cerium Oxide (Optical Grade)
  • (12 Inch Kit Includes Beveler Grinder Stand)

Learn more about Covington Flat Lap Glass Grinders and Bevelers!

Check out our Magnetic Disk Organizers... the perfect place to store your discs!  

During a recent workshop, we had the opportunity to use this Covington flat lap polisher to create, bevel, and polish small dichroic jewelry pieces... it was awesome. I just had to add it to the studio. Using these magnetic flat diamond discs is absolutely the cleanest, fastest way to grind and polish your work. This machine is easy to clean and doesn't require hard plumbing. We put together a recirculating unit using a pond pump, brass fittings, clear tubing, and a 5-gallon bucket. We put ours on a tall stand with a wheel for the ultimate in portability and strength! 

The 12" Covington flat lap polisher and grinder is a versatile unit designed to cold-work pieces of glass. With the appropriate accessories, this unit will grind, shape, and polish small workpieces. There are several features built into this variable-speed lapping unit, including a water sleeve that allows water to come up through the shaft center and disperse from the middle of the plate if you choose, and an overhead loc-line® water supply. It also has a 5/8"-11RH female thread that accepts a variety of different diamond finishing tools. An optional male-to-male brass fitting for female treads is also available.

The speed control allows speed ranges from 200rpm to 1100rpm. The bearings have been set 11" apart on the shaft to give rigidity and stability to the 12" blanched and precision ground plate. A wash-down motor and controller are perfect for wet environments. This unit is made with 11-gauge box tubing and 16-gauge removable side panels topped with heavy-duty powder coating. Comes with a full 1-year warranty on parts.

The Standard Disc Kit:

This kit comes with the most commonly used grinding discs for the Beveler Grinder Units. Kit includes; 1 x 100g Nickel Bond Diamond Disc, 1 x 270g Nickel Bond Diamond Disc, 1 x 325g Resin Disc, 1 x Felt Polish Disc, & 1 lb. Cerium Oxide 

The Bottle Disc Kit:

This kit includes the essentials to start smoothing the interior edge of bottles and curves. Kit includes: 1 x male to male adapter, 1 x Fine Diamond Cone, 1 x Felt Polishing Cone, 1 x 100g Nickel Bond Disc, 1 x 270g Nickel Bond Disc, 1 x 325g Resin Disc, 1 x Felt Polish Disc, & 1 lb. Cerium Oxide 

      Customer Reviews
      5.0 Based on 4 Reviews
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      Filter Reviews:
      Barry W.
      United States United States
      I recommend this product

      Perfect flat lapidary disc machine

      Set up was simple and the lapidary machine works just fine.

      Kathleen A.
      United States United States
      I recommend this product

      The goods are good!

      I am beyond thrilled with my purchase, beautiful, simple easy to use. The variable speed makes it so I can use this as a crack off machine as well! So it is a one piece fits all needs for me! I would highly recommend, and the folks at Kiln frog are extremely helpful!

      Susan B.
      United States United States

      Great Company (Kiln Frog), great service.

      Love it! Much handier than hand grinding!

      April L.
      United States United States

      Buy it from Kiln Frog!

      Kiln Frog is the best! They will help answer any questions and they cost WAY less than the manufacturer! I will definitely buy from them again!!!