How to make knife marks in printing?

This is the so-called laser knife mold. First, you draw the shape you want to cut with CAD software on the computer, and then connect it to the laser cutting machine to automatically cut the slit for installing the cutter on the wood floor. Before the laser cutting machine, the graphics were printed with cellophane and then cut by hand, and the accuracy was not very good. ) Then the automatic knife bender bends the knife into the corresponding shape (it was manually bent by workers before), and finally the knife loader puts the knife on the board. These knives are all quenched, which is very good.