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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...
What is GD&T? If you are involved in design or manufacturing, you may be familiar with the term, “GD&T,” or “Geometric Dimensioning and Tolerancing”. Geometric Dimensioning and Tolerancing is a set of rules and GD&T...
The position symbol is one of the most useful symbols in GD&T - but did you realize that you can use it to allow more tolerance in one direction and less in another? In this video, Jason explains how to achieve bidirectional position control through the use of a Multiple Single Segment Feature Control Frame.
V-Blocks are popular tools used with manual inspections, but come with a unique pitfall that can impact the accuracy of measurements. In this video, Jason walks through the potential issues associated with using V-Blocks and how they can affect measurements of circularity and runout.
Coordinate Measuring Machines (CMMs) are essential tools for obtaining precise measurements. However, to ensure accurate measurements, it is crucial to understand how to use them correctly. In this video, Jason explains the importance of recognizing and utilizing appropriate vectors when inspecting a profile or irregular surface with a CMM probe.
In this series, we will explore the most common errors that we see in implementing GD&T on engineering prints, and provide you with practical solutions to avoiding these pitfalls.
Geometric Dimensioning and Tolerancing, and the concept of “True Position,” originated due to a rejection of functional parts as a result of coordinate dimensioning. Let’s look at a simple assembly to illustrate why this is true, and how GD&T Position takes care of this problem.
The manufacturing industry is facing a workforce shortage, resulting in a loss of tribal knowledge and a widening skills gap. Discover how manufacturers are addressing this through employee training programs - and how GD&T Basics can help your team gain a comprehensive understanding of how to accurately interpret and analyze engineering prints, ensure compliance with industry drawing standards, and acquire the skills needed for effective inspection practices.
In this Question Line Video, Brandon explains Rule #1 of GD&T (the Envelope Principle) and how Go/No-Go gages are used to verify that Rule #1 is met for a feature of size.
As our Training Design Engineer at GD&T Basics, Jason Richter is responsible for creating and maintaining lessons and visual content for our courses and YouTube page, as well as hosting our GD&T Public Training Seminars.
In this Question Line Video, Jason discusses datum preferences for hollow cylindrical parts, where both the ID and OD of the part are mating features.
Jason discusses form controls on a per unit basis using the example of controlling flatness on a large surface in this Question Line Video.
Jason explains how to tell at a glance whether a drawing has inch or metric dimensions in this Question Line video.
In this Question Line video, Jason compares the use of functional gages and CMMs for inspection and discusses benefits and drawbacks of each.
In the Question Line Video below, Jason answers a student’s question regarding whether a feature of size can be designed to both Maximum Material Condition (MMC) and Least Material Condition (LMC) boundary constraints.
In this Question Line Video, Jason uses the example of a cylindrical datum feature to show how non-planar datums can be simulated and how they are able to constrain degrees of freedom.
“How do I inspect position if my drawing references ISO?” In today’s Question Line Video, Jason looks at a part with a cylindrical hole feature and compares the ASME and ISO standards for controlling the position of that hole.
"Why isn’t Maximum Material Condition always just the largest size the feature can be?” Jason answers our student's question and gives us a delicious way to remember the MMC state in this Question Line Video.