1, the knife is loose. If the cutter is not firmly fixed, it will affect the transmission of cutting force, resulting in uneven peeling. At this time, you need to check the fixation of the cutter, and if it is loose, you need to re-fix it.

2, the machine structure is loose. If the machine is loose in the process of use, it will affect the stability of the machine, resulting in the decline of the tool. Need to check the machine structure and fasteners are loose, if loose need to be tightened.