Skip to main content

Category: GD&T Design and Application

Articles related to design concepts or application of GD&T to engineering prints

3 Things Manufacturing and Quality Departments Wish You Knew About Your Drawings

by Tom Geiss on September 3, 2021.

This 3-part series is great for designers or anyone who may be applying things to an engineering drawing. In this series, we’ll review the top 3 things that manufacturing and quality departments wish you knew about your drawings. In Part 1, we’ll discuss the importance of fully understanding what is on your print and the basic framework behind working with...

Why use Profile over Coordinate Dimensioning

by Brandon John on August 16, 2021.

To determine when to use Profile of a Surface or Coordinate Dimensioning, let’s first look at what the 2009 ASME Y14.5 Standard tells us.  Paragraph 2.1.1 was revised to emphasize/encourage the use of basic dimensions in combination with geometric tolerancing as the preferred method of controlling the form, orientation, and location of features.  Direct tolerancing methods, limit dimensions, and plus/minus...

Relating the Secondary Datum Feature to Primary Datums

by Brandon John on June 23, 2021.

Properly defining, qualifying, and referencing datum features is essential to ensure that parts are properly manufactured and inspected.  To begin exploring proper use of datum features, it is helpful if we first review definitions and rules for selecting, identifying, and qualifying these features. A Datum Feature is a feature on a physical part that is used to reference other features. ...

How GD&T Should Influence Your Manufacturing and Inspection Process

by Seth Elder on April 27, 2021.

In this video, we respond to a question asking how using GD&T can affect internal or vendor-provided manufacturing and inspection processes. It is important to remember that the goal of GD&T is to better communicate the functional requirements of the part. Functional requirements are often related to how a part is assembled to other parts, and how it functions in...

Why Understanding GD&T Helps To Create Better Parts

by Brandon John on October 20, 2020.

There are many great reasons why engineers & designers benefit from knowledge of Geometric Dimensioning & Tolerancing (GD&T). But today, we want to share with you just one reason that is particularly interesting. Even though GD&T is simply a method of communicating inspection criteria & dimensional specifications on 2D drawings, learning to use it can be helpful outside the context...