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First make one of the concave mold or the convex mold (reference part) according to the size and tolerance, and then make the other part according to the minimum reasonable gap according to this as the reference.

Advantages: It is not only easy to ensure that the gap between the convex and concave molds is small, but also the manufacturing can be placed

The manufacturing tolerances of large reference parts make manufacturing easy.

Applicable to: profiled or complex cutting edges.

When designing: The cutting edge dimensions and manufacturing tolerances of the reference parts should be marked in detail. Only the nominal dimensions are marked on the non-reference parts, but the drawing should be marked: “The cutting edge of the convex (concave) die is based on the actual cutting edge size of the concave (convex) die. It is matched to ensure the minimum double-sided reasonable gap value.

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