1, when adjusting the size, make sure that the height of your mold is correct, especially when rotating the film, and compare the material belt of the film to see if its product shape or chamfer is ok;

2. When adjusting, the strength is moderate, just use the strength of thumb and forefinger, and don't twist with pliers or other tools. The two screws should be matched, especially when adjusting to the end, the right angle (R angle) of the adjusting rod is easy to break;

3. When retreating outward, pay attention to the withdrawal limit of the adjusting rod to prevent the working spare parts from falling after the adjusting rod is pulled out.