Tag: Datum

Inner or Outer Diameter as Datum Feature

by Crystal Bemis on October 9, 2023.

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.

Datums, Datum Features, and Datum Simulators

by Crystal Bemis on August 11, 2023.

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.

Parallelism – Can you Reference 3 Datums?

by GD&T Basics on February 12, 2021.

This video is in response to a question that we received on our question line from Ignacio.  Ignacio asked us if it is a bad practice to reference three datums in a single drawing callout...