Drilling a Nano Stone countertop requires some precautions to prevent damage. Here are the steps you can follow:

1. Choose a diamond-tipped drill bit that is designed for drilling hard materials. Make sure the diameter is appropriate for the size of the hole you want to create.

2. Mark the spot on the countertop where you want to drill the hole. Use a piece of masking tape to create a small target area.

3. Place a piece of scrap wood under the countertop to prevent chipping on the underside of the material.

4. Apply a small piece of duct tape on the countertop to reduce the chance of chipping around the target area.

5. Put on safety glasses and a dust mask to protect yourself from dust and debris.

6. Add water to the drilling spot to create a lubricant and cooling agent.

7. Start drilling slowly at a low speed, keeping the drill bit perpendicular to the surface. Keep the pressure even and moderate.

8. Once you have drilled through the material, remove the tape and clean the area with a damp cloth.

By following these steps, you can safely drill a hole in your Nano Stone countertop.