2012

Table Of Contents
You cannot check interference for mesh objects. However, if you select mesh
objects, you can choose to convert them to a solid or surface object and
continue the operation.
During the checking operation, you can use the Interference Checking dialog
box to cycle through and zoom to interference objects. You can also specify
whether to delete the temporary objects that are created during interference
checking.
Methods for Checking Interference
You can check interference using the following methods:
Define one selection set. Check the interference of all the 3D solids
and surfaces in a single selection set.
Define two selection sets. Check the interference of the objects in the
first set of objects against the objects in the second selection set.
Individually specify solids that are nested within blocks or xrefs.
Individually select 3D solid or surface objects that are nested in blocks and
external references (xrefs) and compare them against other objects in the
selection set.
Create Surfaces
Create procedural surfaces and NURBS surfaces from curves or by combining
or extending existing surfaces.
Overview of Creating Surfaces
Surface modeling provides the ability to edit multiple surfaces as an associative
group or in a more free-form way.
In addition to 3D solid and mesh objects, AutoCAD for Mac offer two type of
surfaces: procedural and NURBS.
Procedural Surfaces can be associative, maintaining relationships with
other objects so that they can be manipulated as a group.
NURBS Surfaces are not associative. Instead, they have control vertices
that allow you to sculpt shapes in a more natural way.
Use procedural surfaces to take advantage of associative modeling, and use
NURBS surfaces to take advantage of sculpting with control vertices. The
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