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Author: Crystal Bemis

The Problem with Reporting Basic Dimensions

by Crystal Bemis on April 28, 2022.

In Geometric Dimensioning and Tolerancing, Basic Dimensions are theoretically exact dimensions that define the ideal exact location and orientation of surfaces and features of size. A basic dimension is shown on a drawing as a...

Why Use GD&T?

by Crystal Bemis on April 27, 2022. (sticky)

We get a lot of questions from students asking why they would want to use Geometric Dimensioning and Tolerancing (GD&T) over coordinate dimensions. Some believe that using GD&T will result in tighter tolerances and increase...

The Datum Reference Frame

by Crystal Bemis on April 4, 2022.

What is a Datum Reference Frame? Datums are used in Geometric Dimensioning and Tolerancing drawings to create a reference system for inspecting a manufactured part. This reference system is called a Datum Reference Frame (DRF)....

Take our GD&T Skills Assessment Quiz!

by Crystal Bemis on January 28, 2022.

Having a good understanding of Geometric Dimensioning and Tolerancing is very important for anyone working in a mechanical field. GD&T is the language used in design, manufacturing, and quality inspection to communicate on engineering prints....

Advantages of GD&T vs. Coordinate Tolerancing

by Crystal Bemis on November 6, 2020.

Everyone understands the simple plus or minus tolerances of coordinate dimensioning. So why use GD&T instead? Here are four reasons that GD&T has an advantage over coordinate tolerancing…   What are the advantages of GD&T...

Design for Manufacturability

by Crystal Bemis on August 5, 2020.

How do you create a quality design, but at the same time, keep cost and ease of production in mind? In this article we will examine three key areas in designing for manufacturability and give...