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How to Cut Epoxy Resin Countertops

Updated February 21, 2017

Countertops are designed to support your sink and to provide a stable work area in the kitchen. They can be made of almost any hard material. Many common materials used in the manufacture of countertops are porous and require a lot of maintenance. Epoxy resin countertops provide a solid, stable surface. This substance is mixed and poured into moulds at the factory to precise measurements in a controlled environment. The manufacturing process ensures exact fit and maximum strength with strict guidelines and quality control. The finished epoxy resin countertop is ready to install with a minimum of modifications.

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  1. Measure the inside diameter of the length and width of the sink you want to install with your tape measure. Reduce each measurement by 1 inch and draw the outline of the sink onto your countertop with your pencil, using your level as a straight edge.

  2. Locate and mark a spot 1 inch inside of each corner in your outline. Drill through each of these spots with your 1/4-inch diamond tipped bit.

  3. Replace the bit with your 2-inch hole saw. Place the guide bit on the inside of the hole saw into each of the holes in your outline and use the hole saw to widen all 4 holes.

  4. Set the depth of your circular saw to 1/8 inch. Use the shallow blade to score the countertop along each of the lines between the corner holes of your outline. Reset the blade depth to 1/4 inch and score the lines again. Repeat the process, setting the blade 1/8 inch deeper each time until the outline is completely cut through and the cutout is complete. Wipe the dust from the countertop with a dry rag.

  5. Mix the epoxy edge dressing chemical as directed by the manufacturer. Apply the edge dressing to the cut edges of the hole in your countertop with the 1-inch brush. Let the epoxy edge dressing dry for 24 hours before continuing the installation of your sink.

  6. Tip

    This process can also be used to make an epoxy resin countertop shorter or more narrow. Any time you need to cut through your epoxy counter, the process will remain the same.


    Work gloves, safety glasses and a dust mask are required when drilling, filing or sawing epoxy resin. Rubber gloves are required with your safety glasses and a dust mask when working with epoxy edge dressing chemicals.

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Things You'll Need

  • Tape measure
  • Pencil
  • 2-foot level
  • Drill with 1/4-inch diamond point bit
  • 2-inch diamond point hole saw
  • Circular saw with diamond tipped, fine toothed blade
  • Diamond embedded flat file
  • Dry rag
  • Epoxy edge dressing
  • 1-inch paint brush
  • Work gloves
  • Safety glasses
  • Dust mask
  • Rubber gloves

About the Author

After learning electronics in the U.S. Navy in the 1980s, Danny Donahue spent a lifetime in the construction industry. He has worked with some of the finest construction talent in the Southeastern United States. Donahue has been a freelance writer since 2008, focusing his efforts on his beloved construction projects.

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