Drop-in Sink or Cooktop Cut-out

For large cut-outs like drop-in sinks or cooktops, it is better to make the cut out on-site to avoid possible damage during shipment.

The job is best performed by 2 people.

The cut-out occurs after the cabinets have been set and the countertop is put in place according to the design.

Place cardboard and plastic inside the cabinet to protect the finish from dust and debris.

Tools:

-Shop Vac
-Angle Grinder with Diamond Cutting Blade
-2x4 (8" longer than the cut-out)
-2 C-Clamps
-Core Bit

Step 1: Use the template from the sink or cooktop and trace the outline onto the countertop.

Step 2: Cut the left and right sides first with straight cuts (see red lines).
Take your time cutting.
Do not cut all the way to the corners!

Step 3: Make triangle cuts on the inside of the cut-out.
The purpose is to create a triangle-shaped notch in the countertop on each side.

Have one person hold a shop vac near the diamond blade while the 2nd person is cutting.
The shop vac will help control the dust from cutting.

You should have a triangle cut-out on each side before moving to Step 4.

Step 4: Use a C-Clamp on each side and a 2x4 spanning the cut-out to secure the center cut-out section.
The purpose is to hold the center section in place and not have it fall inside and damage the cabinet when all the cutting is complete.

Step 5: Cut the front and back with straight cuts (see red lines).
Do not cut all the way to the corners!

Step 6: Use a core bit to drill a hole in each corner.
This should allow the center cut-out section to be free of the main countertop when all corners have been drilled.

Step 7: Carefully lift and remove the center cut-out countertop section.
Use your diamond cutting blade to clean up the corners.
Install your drop-in sink or cooktop.