•Turn the sink upside down and place it on the installation location, holding the sink in place while tracing its outline.
•Remove the sink and draw a cutting line 1cm inside the traced outline.
•Cut along the cutting line and smooth the edges with sandpaper.
•Apply clear silicone sealant (some installers use glass adhesive) along the outer edge of the cut, with a width of 3.2-6.4mm.
•After installing the kitchen faucet, slowly place the sink against the front edge, covering the adhesive and leveling it out.
•Check the position of the sink on the countertop again, apply glass adhesive or install fasteners at the connection points, and finally clean the countertop.