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122 | Chapter 8 Creating Sketched Features
Key Terms
Te r m Definition
base feature The first feature you create. As the basic element of your part, it represents its
simplest shape. All geometry you create for a part depends on the base feature.
Boolean modeling A solid modeling technique in which two solids are combined to form one
resulting solid. Boolean operations include cut, join, and intersect. Cut subtracts
the volume of one solid from the other. Join unites two solid volumes. Intersect
leaves only the volume shared by the two solids.
consumed sketch A sketch used in a feature, for example, an extruded profile sketch. The sketch is
consumed when the feature is created.
cubic loft A feature created by a gradual blending between two or more planar sections.
draft angle An angle applied parallel to the path of extruded, revolved, or swept surfaces or
parts. A draft angle is used to allow easy withdrawal from a mold or easy insertion
into a mated part.
extrude In part modeling, to create a geometric sketch defined by a planar profile
extended along a linear distance perpendicular to the profile plane.
feature An element of a parametric part model. You can create extruded features,
revolved features, loft features, and swept features using profiles and paths. You
can also create placed features like holes, chamfers, and fillets. You combine
features to create complete parametric part models.
helical sweep A geometric feature defined by the volume from moving a profile along a 3D
path about a work axis.
linear loft A feature created by a linear transition between two planar sections.
lofted feature A parametric shape created from a series of sketches defining the cross-sectional
shape of the feature at each section.
revolve In part modeling, to create a feature by revolving a profile about an axis of
revolution.
sketch plane A temporary drawing surface that corresponds to a real plane on a feature. It is an
infinite plane with both X and Y axes on which you sketch or place a feature.
sketched feature A three-dimensional solid whose shape is defined by constrained sketches and
located parametrically on a part. Sketched features are extrudes, lofts, revolves,
sweeps, or face splits.
sweep A geometric sketch feature defined by the volume from moving a profile along a
path.
swept profile A special parametric sketch used to create a swept feature from the cross section
of a profile.