2-Model GCDs

The 2-Model Machining process group extracts two GCDs in addition to the other GCDs used in the Machining cost model:

• source model

• flat

For a detailed discussion of these GCDs, see the section "2-Model GCDs" in the aPriori Cost Model Guide.

Cost drivers		Description
GCDs	Source Model	Allows you to visualize the difference between the initial raw part (the “source” model”) and the finished machined part by displaying a transparent representation of the source model while you are viewing the finished model.
	Flat	Represents geometry that is typically spot-faced (for example, to clean off a surface so that it mates better with another part or fastener). It typically is generated only for geometry that is milled and not turned, as Ring GCDs typically will be generated for turned geometry