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Notice

1.Reasonable angle and round angle ensure a better molding.

2.The special heigh, angle and round angle will increase the stress of materials.

3.For those higher and deeper moldings, the materials should be smooth or lubricate

 the panels when processing.

4.The reasonable angle should be 90 degree.

5.The best height of the molding is less than 3 times of the thickness of the panel.

6.In order to prevent weakening the intensity of lower die when punching, must ensure that ?D>5t+?d.