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Start by drawing out where the dimensions of the sink on the countertop. Be sure that the dimensions are about 1/2 inch smaller in diameter than the sink's edges.
Using a paddle bit, drill a hole in the countertop where one of the sink's corners will be (Image 1).
Place the jigsaw blade into the hole and cut out the hole for the sink (Image 2).
Roll out some plumber's putty and then apply around the drain flange (Image 1).
Tip: When installing sinks, it's always easier to install the drain assembly and the faucet assembly before installing the sink in the counter. This reduces the amount of time spent working under the sink and inside the cabinets.
Place the drain flange into the drain hole in the sink, pressing it firmly to compress the putty (Image 2).
Flip the sink over and place the rubber and paper gaskets on the drain stem. Add the cover and thread the locking ring into place (Images 1 and 2).
Use a pair of channel lock pliers and tighten the locking ring onto the drain assembly (Image 3). When everything is tightened properly, there is a ring of plumber's putty oozing out from under the drain flange creating a water-tight seal that won't leak. Wipe away the excess putty.
To install the faucet, repeat the process. Press the plumber's putty around the flange (Image 1). Install the faucet stem into the sink.
Install the washer, thread the nut on and tighten the nut down (Images 2 and 3).
Apply caulk to the perimeter of the sink hole in the counter (Image 1).
Place the sink into the hole, lining up the edge of the sink with the bead of caulk. Once the sink is set, press it into place allowing the caulk to squeeze out from under the sink's edge (Image 2). Doing this will create a water-tight seal.
Clean up any access caulk using a wet rag and give the caulk time to dry after hooking up the water lines before using the sink.