The landlord's language organization is not good, and most people can't understand it. . .

Is the punched aluminum sheet twisted and not stretched well?

There are two ways to do this:

First, replace the materials, some of which are so hard that it is difficult to pull them lightly. Although they won't break, they are under pressure. Therefore, for shallow drawing parts, the raw materials should be soft and the material composition should be relatively uniform. Generally, imported materials will be better. If aluminum is used, it will be good for Chinalco and bad for Korean aluminum.

The second is to add a mold, carve a good copy, and then add this engineering plastic, which can generally improve a lot.