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How to create a cut out for sinks and cooktops

Person drawing around the edge of a sink with a pencil.

Overview

We'll show you how to cut a hole in your benchtop for a kitchen sink. You can follow the same steps for a cooktop. Starting with an easy way to trace out your cutline on the benchtop. Then you'll see how to cut the hole with a circular saw and a jigsaw. 

Steps

1Mark the cut line for the sink on the benchtop

Flip the sink over and position it on the bench. Line it up so the basin is directly over one cabinet and the lip is 50-60mm back from the bench edge. Now trace around it with a pencil. Take the sink away and mark out a second outline 10mm inside the first. This will be your cut line.
Person drawing around the edge of a sink with a pencil.

2Cut out the hole for the sink

Before you start cutting, make sure there are no pipes or screws under your cut lines. (If there are, you can always remove them temporarily.) Measure the thickness of your bench and set your circular saw blade to cut 10mm deeper than your bench. Now cut along your lines, stopping just before you reach the corners. Then use your jigsaw to cut out the corners. Remove the cut out and your sink is ready to install. You can make this job a little easier by drilling a hole on the inside of your cutline first. Then use than hole as a starting point for cutting out with your jigsaw, and finish off with the circular saw.
Person cutting kitchen benchtop with handsaw.
Health & Safety

Asbestos, lead-based paints and copper chromium arsenic (CCA) treated timber are health hazards you need to look out for when renovating older homes. These substances can easily be disturbed when renovating and exposure to them can cause a range of life-threatening diseases and conditions including cancer. For information on the dangers of asbestos, lead-based paint and CCA treated timber and tips for dealing with these materials contact your local council's Environmental Health Officer or visit our Health & Safety page.

When following our advice in our D.I.Y. videos, make sure you use all equipment, including PPE, safely by following the manufacturer’s instructions. Check that the equipment is suitable for the task and that PPE fits properly. If you are unsure, hire an expert to do the job or talk to a Bunnings Team Member.

Please note: Our range of engineered stone products is no longer available. Our team members can help you with our wide range of alternatives to suit your project, and we're working closely with our suppliers to introduce new options soon.