CAD tip # 8927:

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How to exclude parts of the Inventor assembly from total mass?

If you need to exclude some parts (e.g. entourage) from calculations of the total mass, COG or inertial moments of your assembly (3D model), set them as "Reference".

Components marked as a Reference are not taken into physical calculations (as if they have null mass, zero material density) and they may not be listed in the BOM.

Select the non-participating components in the assembly browser, right-click and choose BOM structure > Reference. Alternatively you can use the dialog "Bill of Materials" (Assemble > Manage > Bill of Material) and the column "BOM structure". After you change this setting, recalculate the new, lower net mass (weight) of your assembly using Manage > Update > Update mass.

If you need to display reference parts in drawing views with a continuous, non-dashed linetype, in the dialog "Drawing view", in the tab "Model state", choose the parameters "Reference data":"As parts" and "Hidden line calculation":"All bodies".

Another option is to manually overwrite the mass of the entourage subassembly or part with the zero value (0):

InventorInventor2013

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20.11.2012 18864×

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applies to: Inventor · Inventor 2013 ·

See also:
Tip 12627:	How to override weight of an assembly component in Fusion 360?
Tip 11211:	Mass change of units in the whole Inventor assembly.
Tip 11034:	Mass property depending on the current LOD in an Inventor assembly.
Tip 10219:	Can Autodesk Fusion 360 make use of multicore CPUs?
Tip 10161:	Automatic checking of design limits in Inventor.

Selected tip: How to change multiple face colors in Inventor?

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