How the thickness of the sheet metal exceeds 10mm, the vertical degree of cutting edge is very important. As far away from the focus, the laser beam becomes divergent, and the cutting is widened toward the top or bottom according to the position of the focus. The cutting edge deviates from the vertical line a few millimeters, the edge is perpendicular, the cutting quality is higher.

Incision width generally does not affect the cutting quality, only in the part of the formation of a particularly precise contour, cutting width is important, this is because the cutting width determines the profile of the smallest internal, when the thickness of the sheet increases, cutting width also increases. So to ensure the same high accuracy, regardless of the width of the incision, the workpiece in the laser cutting machine processing area should be constant.

Pitting and corrosion have an adverse effect on the surface of the cutting edge and affect the appearance. They appear in the usual cutting error that should have been avoided.

In laser cutting, the area near the incision is heated. At the same time, the structure of the material changed. For example, some materials can harden. The heat-affected zone refers to the depth of the area in which the internal structure changes, and the lower the depth, the better in fiber metal laser cutting machine.