3-2-1 Principle in Geometric Dimensioning and Tolerancing (GD&T) | Explained Simply
The 3-2-1 Principle is a fundamental method used to locate and fully constrain a part in space for manufacturing or inspection. It uses 3 points to fix a primary datum, 2 points for the secondary, and 1 point for the tertiary datum, eliminating all six degrees of freedom.
In this video, we’ll explain how the 3-2-1 Principle works with clear visuals and practical examples to show its importance in fixturing and datum setup.
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