All cut-outs for drop in sinks and overmount sinks are made on the job site. Please have the sinks at the job site at the time of installation. All undermount sinks have to be at our shop at least 3 days prior to the scheduled install date. Please request your plumbing company to ship the sink to us, or we can arrange to pick up sinks if they are available locally. All cut-outs for the undermount sinks are made in the fabrication shop. We do not make cut-outs based on templates or specification sheets.