Load your NX drawing

template file.

Great than

MENU > INSERT > DESIGN

FEATURE > EXTRUDE

Choose the XZ plane of the

coordinate system.

Why choose this

orientation for our initial

sketch plane?

Create the following sketch as shown in the figure.

MENU > INSERT > DIMENSIONS > LINEAR

Apply dimensional constraints as shown.

Set the values as indicated.

If you have to return to a dimension to

edit its value, DBL Click on the dimension

value to open the edit window.

Why are the values for P11 and P12 set to

have equation values?

Middle Mouse Button (MMB) to end.

TASK > FINISH SKETCH

Under LIMITS and START, use the

dropdown to set the value to:

Symmetric Value

This will cause the extrusion to

build symmetrically to both side

of the sketch plane.

For our model, set Distance = 2.5

Note that this is the one hale of

the total distance of the extrude,

in other words, the extrude

distance to one side only.

Select Apply to end.

The Extrude dialogue box will

remain open for the next step.

The Section Select Curve line remains

highlighted.

This means we can select an entity to define

the sketch plane for our next extruded

feature.

Move the mouse to the top surface of the

object.

Note the coordinate system that is shown

on the highlighted surface. It will move from

vertex to vertex as you move the mouse

across the surface.

This coordination system will define the

orientation of the sketch plane when you

proceed to the sketch view.

Select the top surface of the object as

shown.

Sketch the geometry as shown. Begin and end the sketch geometry on the

existing edge of the surface.

Dimension the sketch as shown. Note that only three dimensions are

needed to constrain the sketch. Why?

MENU > TASK > FINISH SKETCH

In the Extrude Dialogue select the option for

Direction by picking the words Specify Vector.

Move to the Drop Down and set the selection method to Inferred

Vector.

Pick the edge of the inclined surface (as shown)

This will set the extrusion direction to be in the

direction of the edge.

NOTE: You can also use other methods to define this

vector such as defining two point is space, or setting

it to the normal vector of a surface.

Go the Limits and End setting.

Use the Dropdown menu to set this value to Through All.

Select APPLY to end.

This will leave the Extrude dialogue open.

Now to create the next feature.

Pick the top surface to define the sketch plane.

Sketch the three lines (starting the first line at the

approximate midpoint of the existing horizontal edge)

and apply the dimensional constraint as shown.

Why is only one dimension needed?

MENU > TASK > FINISH SKETCH

Set the extrude Direction to be the same as the

inclined edge as before.

Set the extrude Distance to Through All

Select OK to end.

Next we will duplicate this last feature by Mirroring

the feature.

MENU > INSERT > ASSOCIATIVE COPY > MIRROR FEATURE

Choose the last feature created by

picking directly on the feature.

Go the Mirror Plane section of the dialogue and pick on the words

Select Plane. This will allow us to pick a plane to mirror about.

Leave the option setting at “Existing Plane”, we will pick an existing

object.

Pick the Datum Plane labeled XZ (as shown)

Remember, we centered the part on this

datum plane when we created the original

geometry when we performed the first

“symmetrical distance” extrude.

NOTE: if you have trouble picking the datum

plane change your display to wireframe to

make it easier.

Select OK to finish.