Definition of Terms-Parts and Features

By Chris A. Lindenberger | May 17, 2018 | 0 Comments

Today I want to talk about a common definition for something we all talk about when the subject of GD&T comes up. I think it’s safe to say that the vast majority of people reading this series earn their livings on the floors of American factories. We design, machine, assemble, weld, measure, probe, form, punch, […]

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Definition of Terms- Maximum Material Condition

By Chris A. Lindenberger | Apr 17, 2018 | 0 Comments

With the previous topic, Rule #1, we discussed the need for a guiding principle to govern the need for geometry to follow rules that allow things to fit under all conditions, given that the proper engineering has been established for the condition being considered. That principal was stated as “size controls form.” In it the […]

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Definition of Terms-Feature Control Frames

By Chris A. Lindenberger | Mar 15, 2018 | 0 Comments

Today our featured GD&T term is “feature control frames.” We at Metalcraft decided some time ago to put together a glossary of sorts. It will be alphabetized in proper fashion but as various terms are added they will not be added in A to Z fashion, but more in order of importance, or more importantly, […]

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Definition of Terms-Rule #1

By Chris A. Lindenberger | Feb 15, 2018 | 0 Comments

Rule #1. In the world of engineering drawing there is an infinite amount of complexity to be detailed. All over the world there are parts and mechanisms that are dreamed up every day and for many of them there is a need for the assurance that a particular design will be flexible enough to work […]

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Definition of terms- Actual Mating Envelope / Related and Unrelated.

By Chris A. Lindenberger | Jan 22, 2018 | 0 Comments

Actual Mating Envelope – The Basics Actual mating envelope is a term that refers to a machined / manufactured part’s feature of size “as is” condition. To define what that means specifically, we need a specific individual part to talk about. The reason for that is when you have a part, or bunch of parts, […]

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