Common Errors in GD&T Drawings: Misuse of the Symmetry Symbol

In this four-part series, dive into the world of GD&T with Jason as he explores the most common errors that we see in implementing GD&T on engineering prints, and learn practical solutions to avoiding these pitfalls.
*We'll be unveiling each part of our in-depth series weekly. Make sure to follow us to stay updated with each release!*
In part 3 of this series, we look at the misuse of the symmetry symbol on GD&T drawings. Jason sorts out the confusion around this symbol and explains when and how it should be used… and why we recommend you use the position control instead.
In case you missed the earlier videos in this series, find them here:
Part 1 - Common Errors in GD&T Drawings: Neglecting to Reference the GD&T Standard • Common Errors in GD&T ...
Part 2 - Common Errors in GD&T Drawings: Mistakes in Defining Features
• Common Errors in GD&T ...
Interested in learning more about Print Reading or GD&T? Check out more of our free GD&T resources here: download.gdand...
#gdandt #engineeringdrawing #gdandtsymmetry

[@FMCDrafting-so1rm]

thanks

[@andreicharpentierquesada4530]

Instead of location for the cut at the end i would use perpendicularity 0 error at MMC, that use to be a good practice for assemblies

[@Gdandtbasics]

Keep in mind that perpendicularity ( even at 0 tolerance at mmc ) does not control location of the feature and that would leave the feature underdefined in its location. However, theoretically, if this width feature were a secondary datum feature then we could absolutely leave the control up to perpendicularity back to Datum A.

[@FMCDrafting-so1rm]

THE BOTTOM GD&T has a dia symbol before .015 is this correct? it's a slot not a hole?

[@Gdandtbasics]

Nice catch! that is definitely a misprint and the diameter symbol should not be there since this is a width feature.

[@FMCDrafting-so1rm]

@@Gdandtbasics thanks :)