Creating a hole in the mechanical part
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.
. Select from the menu Geometry->Create->Object->Polygon to create a regular polygon.. Enter 8 as the number of sides of the polygon.. Enter (0,0,0) as the center of the polygon.. Enter or select (0,0,1) (Positive Z) as the normal of the polygon.. 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.
Creating a hole in the mechanical part