What causes the difference in quality between domestic and overseas 3D CAD?

The dimensional tolerance conveys a "true tolerance" that has its limits.

There have been reports of cases where defects suddenly occurred in parts that should not have had issues in domestic manufacturing when the design drawings were brought to overseas manufacturing contractors. This is a significant problem arising from differences in the interpretation of design intent at the manufacturing site. Conventional dimensional tolerances cannot fully convey the true tolerances of the shape, such as bending or tilting of parts. Domestically, designers communicated their intent, and manufacturing personnel understood and improved upon that intent, but overseas, interpretations of the drawings were made arbitrarily, leading to defects as a result. By applying **Geometric Dimensioning and Tolerancing (GD&T)**, this "ambiguity" can be completely eliminated, allowing tolerances to be communicated clearly. This standardized language is the key to ensuring global manufacturing quality. Please refer to the materials for specific examples of the limitations of dimensional tolerances and why geometric tolerances are essential. *For more details, please download the PDF or feel free to contact us.*

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