To drill into a Travertine countertop, follow these steps:

1. Mark the spot where you want to drill the hole with a pencil or a marker.

2. Choose the appropriate size of the drill bit, depending on the size of the hole you need.

3. Attach the drill bit to your drill, making sure it’s tightly secured.

4. Place a small piece of masking tape over the spot where you want to drill. This will help prevent the drill bit from slipping.

5. Pour a small amount of water onto the masking tape, using a spray bottle. This will help keep the drill bit and the countertop cool while you’re drilling.

6. Hold the drill steady and upright, keeping it at a right angle to the countertop.

7. Start drilling slowly, applying a moderate amount of pressure. Make sure to keep the drill level and straight while you’re drilling.

8. Stop drilling periodically to allow the drill bit and the countertop to cool down. It’s important not to overheat the material, as this can cause it to crack or break.

9. Keep drilling until you’ve reached the desired depth.

10. Remove the masking tape and clean the area around the drilled hole.