NIMS Offers Novel GD&T Teaching Technique

The National Institute for Metalworking Skills (NIMS) recently announced that it has developed a new methodology to learn, retain, and transfer knowledge for Geometric Tolerancing & Dimensioning (GDT) across an organization. NIMS offers the training in a day and a half workshop.

Conventionally, most people are taught print reading with drawings annotated with limit dimensioning and all its flaws. Lessons in limit dimensioning are further applied in engineering or manufacturing activities. Students or employees are then exposed to GDT – the international standard with symbols to describe parts in a language that is clearly understood by any manufacturer. This traditional approach usually results in limit dimensioning being the first language, or ‘native tongue’, and GDT being the second. Going back and forth between the two is a struggle for many and they rely on craftmanship to produce parts. This approach may eventually lead to producing parts within the specifications but, according to NIMS, that approach is inconsistent and wastes time.

“GDT is the best way for manufacturers to ensure parts are absolutely within specifications,” said NIMS Executive Director Montez King. “It gives designers, engineers, and machinists a common language to communicate not only for manufacturing, but how those parts fit into its final assembly.”

However, like any language, it only works if everyone agrees to speak it and fully understands it. And that’s where NIMS comes in.

According to King the optimal way to learn GDT is to teach employees and students how GDT works rather than its applications. Teaching GDT applications restricts understanding and only relays a process or procedure. But when GDT is understood, as though it’s the person’s native tongue, every application makes sense. In fact, when GDT is well understood, its retained, and applications can be improved continuously.

NIMS helps organizations transfer GDT knowledge and skills much the same way children learn their native language. Further, NIMS teaches an organization how to embed GDT across all lines of communication within the enterprise. By the end of NIMS GDT training, the staff will be able to understand and use GDT in all stages of design and production.

For more information: www.nims-skills.org

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