Is the Geometric Dimensioning & Tolerancing System recommended for product designs intended for die cast production?
A. The functional dimensioning scheme, basic to GD&T, helps the designer examine and better analyze product function in the design stage and establishes part tolerances based on functional requirements. With geometric dimensioning, the designer has the best opportunity to balance optimum function and lowest part cost through his or her engineering drawings. By enabling the designer to determine the maximum allowable tolerance that will not adversely affect product function, significant manufacturing savings can result. When manufacturing produces parts to the dimensions and tolerances on a GD&T print, there is the highest degree of confidence that the parts will function as intended. GD&T is the preferred dimensioning system for die cast part drawings as well as for any of today’s precision manufacturing processes. A special chapter outlines the GD&T scheme as it applies to die cast part prints in the NADCA Product Standards Manual (See description & Discount Order Form).
