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GD&T Cost-Saving Calculator Estimates Savings for Organizations


The GD&T Potential Savings Calculator is the latest in a series of free resources available from Effective Training. The calculator is a tool that helps companies understand the amount of unnecessary expenditures each year due to employees who don’t know how to correctly apply and interpret geometric dimensioning and tolerancing (GD&T). It is offered exclusively at ETI’s website (

The calculator was developed by ETI to help companies realize the value of utilizing GD&T correctly throughout the design and manufacturing process. It analyzes the costs associated with creating, interpreting and revising drawings, as well as the price of communicating or interpreting design requirements for suppliers and manufacturing. It also factors in many other manufacturing expenses associated with the revisions to fixtures, tooling, and gages that result from poor drawings. The calculator can be used at the company, division, department or project level. Tool tips provide assistance with understanding data entry.

“Used correctly, GD&T decreases time spent creating and interpreting drawings by 30-50%,” said Alex Krulikowski, GD&T expert and ETI president. “Drawing changes are reduced by 50% through the use of proper tolerance analysis, clear concise drawings, and understanding how to correctly determine tolerance values. Used properly on drawings, GD&T results in a decreased cost for gages, manufacturing fixtures and tooling, workpiece rework, scrap, warranty costs, and major plant problems. The GD&T Potential Savings Calculator factors all of these elements and displays a detailed estimate of an organization’s potential savings with proper GD&T application. Companies who try it will be amazed at the impact GD&T will have on their ability to cut costs.”

After estimating how much money the proper application of GD&T can save a company annually, the calculator compares that figure with an approximate cost to provide employees with training in GD&T fundamentals, advanced concepts, and tolerance stacks. These courses constitute a core education in GD&T, but ETI also offers classes in Statistical Tolerance Stacks, an ASME/ISO Comparison, and Solid Model Tolerancing (Y14.41-2003).

ETI has been in the GD&T training business for 20 years. They provide hands-on workshops at locations around the world. ETI offers skills testing with every workshop, and all of their courses can be customized to include a company’s drawings and parts. To inquire about a custom training program, call 800-886-0909.


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