R. Dean Odell

First Video in my GD&T Explained Series

I discuss four concepts that I have identified
as being key to understanding GD&T.

I explain the four form tolerances:
Flatness
Straightness
Circularity
Cylindricity

I explain the three orientation tolerances:
Perpendicularity
Parallelism
Angularity

I explain the concept of the datum reference frame, and how it is applied to design.

I explain how circular and total runout tolerances work.

I explain the basics of profile tolerances.

I explain tolerances of position.

I cover concepts that may be considered “advanced”, but are usually just uncommon to see on drawings.