Used to prepare scratching cardboard for cats. Used to cut cardboard into equal strips. Compress these strips side by side and create a scratching board. For the blade clamping lever, 1 M3 15mm screw and M3 nut are required. Glue the nut you placed in the slot. On the other hand, tighten the screw and fix it. It will make it easier to change the blade.

NOTE: Before replacing the screw, slightly widen the entrance of the hole on the part with a small Phillips-head screwdriver. This will allow the screw to enter the bed more easily.