Zhong Shen Industrial Co., Ltd.

Resources for sourcing teams

Design for Manufacturing

Geometry decisions that determine whether a part molds cleanly, made before the steel is cut.

Engineer reviewing a 3D CAD model of a molded bracket assembly on screen

Design for Manufacturing

What a DFM Review Actually Checks Before the Steel Is Cut

A design for manufacturing review is a structured read of your model against how the tool will be built and how the part will eject. Here is the checklist it works through.

Jul 30, 2026

CAD render of core inserts standing in a mold cavity block

Design for Manufacturing

Draft Angles Explained: How Much Your Part Actually Needs

Too little draft and the part drags, scuffs, or sticks in the tool. Here are the working numbers by depth and surface finish, and the features where draft is routinely forgotten.

Jul 16, 2026

CAD model of a molded enclosure wall with a recessed grip feature under review

Design for Manufacturing

Wall Thickness in Injection Molding: Designing Out Sink Marks and Warpage

Uneven wall thickness is the most common reason a first sample comes back with sink marks, warpage, or short shots. Here is how to get it right before the tool is cut.

Jul 9, 2026

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