Mar 7, 2025 · My drawings are created (& read) in 3D format (MBD). I read an article that basic dimensions can be omitted in MBD; the main advantage being shorter dimensioning time. I …

Apr 29, 2008 · Does anyone know of a standard, specification, or industry best practice reference that addresses basic dimensions in first article inspections? I've checked AS9102 and haven't …

Jul 16, 2014 · Dimension, Basic. A numerical value used to describe the theoretically exact size, profile, orientation, or location of a feature or datum target. See Fig. 3-7. It is the basis from …

Nov 10, 2009 · An engineer I'm working with has dimensioned a part in a similar fashion to the example provided, where a Datum face is included in a True Position control frame but the …

Oct 12, 2004 · The spacing can also be defined by basic dimensions if necessary. At t.p. tolerance frame can then control the location of the holes relative to the basic dimensions, …

Nov 13, 2019 · Gentlemen, What about this approach: If a feature is defined with a stand-alone FCF geometrical tolerance then should have its applicable basic dimensions shown and …

Aug 31, 2017 · Those actual dimensions are recorded and compared to the basic dimensions to find the delta from each X & Y Basic Dimension (True Position). The outcome after the …

Dec 1, 2015 · Whenever a profile is used, it is associated with a true profile (a surface defined with basic dimensions). (Here is the part that seem somewhat contradictory) The true profile …

Oct 17, 2007 · We agree that the "tolerance can be stated using one decimal place, the associated dimensions could also be one decimal place. The decimal places of the locating …

Feb 10, 2023 · Basic extra dimensions are simply redundant, but don't create the consequences of over defining by directly toleranced dimensions.