GD&T Articles

by Seth Elder on September 14, 2020.

In this question line video, Brandon reviews the differences between the GD&T callouts for circularity, circular runout, and total runout. To examine the differences in these concepts it is helpful to first review the GD&T hierarchy of SLOF – Size, Location, Orientation, and Form. When defining a feature, begin by specifying the size of a…

by GD&T Guy on September 9, 2020.

Does Runout or Size Control the Circularity/Form Error in GD&T? (Answer: It Depends) In this article video, we aim to answer how Runout is used to control the form/shape/circularity/cylindricity on a cylinder. It also talks about when there is an exception to this due to Rule #1 of GD&T.

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 you several tips to get started. What is “Design for Manufacturability?” “Design for manufacturability” is also known as “design for…

by Seth Elder on July 24, 2020.

ASME Y14.5 is an established, widely used GD&T standard containing all the necessary information for a comprehensive GD&T system. This article provides an in-depth look at of the contents, history, and purpose of the standard. GD&T and Standardization Geometric Dimensioning and Tolerancing, or GD&T for short, is a language of symbols used to communicate information…

by Brandon John on July 22, 2020.

We would like to shed light on an interesting discussion stemming from a question asked in our Engineering Drawing Basics Course. A student shared their viewpoint about the correct use of centerlines in engineering drawings, which was a bit conservative as they were missing a key application of this essential drawing feature. Since questions about…