This is a transparent view of a sample cabinet. Notice the interlocking peices. The fit is no less than perfect, being cut without any possibility of human error. The holes are exquisite, the lines are faultless, the countersinking is to the nearest thousandth of an inch. CNC work can not get any better. Meticulous customers are not impressed with just average CNC work, and they certainly don't want to see holes cut with outdated techniques such as hand routing. Low tolerance is what it is all about.