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Take a wide putty knife and place it between the sink and the counter. Using a rubber-mallet hammer, tap the putty knife until it slides under the sink (Image 1).
Note: This process will break the seal allowing the sink to be removed without causing damage.
Remove the basket strainer from the sink. Place one hand in the sink where the basket strainer was removed (Image 2).
Finally, slowly remove the sink. Make sure the sink is completely free from the counter.
If the new sink is too large for the countertop hole, a larger hole will need to be cut.
Use the template that came with the new sink to mask off the area onto the countertop (Image 1).
Make round holes into each corner using a paddle bit (Image 2).
Cut out the remainder of the template using a jigsaw with a special blade for cutting laminate.