How to make cardboard with a knife

The manufacturing method of the cardboard claw knife is as follows:

1. Preparation materials: Choose a piece of cardboard with appropriate size and thickness, such as paper box, packaging cardboard or carton. You also need to prepare pencils or crayons, scissors, rulers, tape or glue, sandpaper and other tools.

2. Measurement and design: Measure the shape and size of the knife on the cardboard with a ruler. According to personal preferences and needs, design the shape of the knife and mark the required length and width on the cardboard.

3. Cutting and folding: Cut the cardboard into the shape of claw knife along the scribe line with scissors or sharp blades. Then, fold the cardboard into the shape of a claw knife and fix it with tape or glue.

4. Grinding and polishing: Use sandpaper to grind the edges of the cardboard to make it smoother, or use adhesive tape or glue to stick sandpaper on the cardboard to make the claw knife sharper after polishing.

5. Complete the production: finally, check the claw knife and make sure there is no problem before completing the production.

The role of grasping the knife:

1, the role of grasping the knife is mainly used for hand training and strengthening hand strength. This training method can effectively improve the strength and endurance of hand muscles, thus enhancing the control ability and flexibility of the hand.

2, grasping knife training can exercise hand muscles, especially the muscles of the palm and forearm. By holding and loosening the knife repeatedly, the load of hand muscles can be effectively increased, and muscle growth and strength can be stimulated.

3. Grasping the knife training can improve the hand control ability. When holding the knife, we should master the correct method and strength of holding the knife to ensure the stable control of the knife. This kind of training can improve the coordination and accuracy of hand fine movements, thus enhancing hand control ability.

4, grasping knife training can also enhance the anti-fatigue ability of hands. Muscle fatigue is a common problem in high-intensity hand training. The strength and endurance of hand muscles can be gradually enhanced by grasping the knife training, so as to better cope with the fatigue caused by high-intensity training.

5, grasping the knife training can also enhance the flexibility of the hand. In the process of grasping the knife, it is necessary to constantly adjust the posture and movement of the hand to enhance the flexibility and coordination of the hand. This kind of training can improve the reaction speed and sensitivity of the hand, so as to better cope with unexpected situations.