3 How do you modify the radius of an Arc or Circular Arc after you have
created it.?
(a) In the Attributes section of the Windows > Information >
Information Window.
(b) Use Object Edit > Query Edit and click the curve.
(c) You have to delete the curve and create a new one.
(d) Pick and scale the curve.
(e) Use Locators > Measure > Distance to apply a dimension, and
then change the number on the dimension.
4 Building geometry at the origin is a good idea because….
(a) Grouping objects will create a pivot point at the origin.
(b) The Edit > Duplicate > Mirror tools can be used to create
symmetrical geometry.
(c) The Layer symmetry tools can be used to work with symmetrical
geometry.
(d) You can use the center grid lines for snapping geometry to.
(e) All of the above.
5 The Round tool has what advantage over the Surface Fillet tool?
(a) It is more accurate
(b) You can chain select a row of edges
(c) It has Construction History
(d) It automatically trims the surfaces
(e) The Round tool can create a corner surface between three edges.
On Your Own
Now you can create accurately sized models, and use geometric shapes to
create a disciplined design. The Draft surface tool is particularly useful when
designing plastic molded parts, but can equally be used to quickly create any
edge surface.
Below are some examples of similar projects that you can try.
This headset for a cell phone is constructed in a similar way to the MP3 player,
using arcs and Draft surfaces.
506 | Chapter 7 Modeling an MP3 Player
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