Cutting Holes in Solid Surface Sinks. Solid surface sinks, such as Corian, or cast acrylic typically have their sink holes drilled right on site. This means that no matter how many holes you want, or if you plan to add more holes down the road, the holes are drilled right in your kitchen with a hole saw.Holes in solid surface are measured, marked and cut on the backside of the sink. This helps prevent chipping or marking of the surface of the sink.his means that no matter how many holes you want, or if you plan to add more holes down the road, the holes are drilled right in your kitchen with a hole saw. Holes in solid surface are measured, marked and cut on the backside of the sink. This helps prevent chipping or marking of the surface of the sink.