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Table Of Contents
268 | Chapter 12 Creating Parts
As you move your mouse over a part, Mechanical Desktop highlights the
faces that can be used to define a new sketch plane. Faces that cannot be used
are not highlighted. When you select a face, a temporary sketch plane
appears on that face.
You can choose the Z direction and orientation of the XY axes for the new
sketch plane.
After you have selected the options, the temporary sketch plane disappears
from the screen. You are ready to create the sketch geometry.
In the next exercise, the bottom face of the base feature is the sketch plane.
On this face, you sketch a profile to extrude through the part. Once placed,
the sketch and subsequent features remain attached to the base feature,
regardless of changes you make later.
To create a sketch plane
1 Use
MCAD2 to change your display to two viewports.
Desktop Menu View Viewports 2Viewports
The left viewport is a top view of the part; the right viewport is an isometric
view.
Before you create the sketch plane, check the system variable that controls
the UCS settings for your viewports. By default, each viewport has its own
UCS.
2 If necessary, change the UCS setting so that each viewport uses the same
UCS, responding to the prompt.
Command
UCSVP
Enter new value for UCSVP <1>: Enter 0
temporary sketch plane