In explaining what each cutting machine is we've come to our first difference; CNC cutting is achieved through friction, while laser cutting is achieved through heat. This difference is the most crucial, as it helps to set each machine apart and gives them each a number of unique areas where they thrive.

Since the CNC machines use a physical blade they create wider cuts by necessity. Accordingly, to cut a certain line you also sacrifice some of the material along the edges of that line. Lasers, on the other hand, have an extremely narrow focus. This allows them to make precise cuts, with less wastage.

Laser cutting disadvantages include: limitations on material thickness, harmful gases and fumes, high energy consumption, and upfront costs.

The two most common ways to engrave metal parts are laser engraving, and CNC engraving. The same general principles apply, but they are two different machines, and mark the parts differently. In some cases, laser engraving is better, and other times CNC engraving is best.