CREATING A HOLE IN THE PART
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In the previous sections we drew the profile of the part and we created the
surface. In this section we will make a hole, an octagon with a radius of 10
units, in the surface of the part. First we will draw the octagon.
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Select from the menu Geometry
Create
Object
Polygon
to create a regular polygon.
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Enter 8 as the number of sides of the polygon.
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Enter (0,0,0) as the center of the polygon.
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Enter or select (0,0,1) (Positive Z ) as the normal of the polygon.
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Enter 10 as the radius of the polygon and press ENTER . Press ESC
to finish the action.
We get the result as shown in figure 20. As we only need the boundary we should
remove the associated surface. Select the option Geometry
Delete
Surfaces
and then select the surface of the octagon. Press ESC to finish.
Figure 17. Regular
8-sided polygon
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Creating a hole in the surface of the mechanical part
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Choose the option Geometry
Edit
Hole
NURBS Surface .
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Select the surface in which to make the hole (Figure 18).
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Select the lines that define the hole (Figure 19) and press ESC .
Figure 18. The
selected surface in which to create the hole
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Figure 19. The
selected lines that define the hole
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Again, press ESC to exit this function.
Figure 20. The
model part with the hole in it
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