Creating a hole in the part

In the previous sections we drew the profile of the part and 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.

Creating two sides of the octagon

1. Create a point (10, 0). Choose Geometry Create Point and enter the coordinates. Press ESC to conclude the insertion of the point.

2. In the Copy window, select Points and Rotation. Enter an angle of 45 degrees and in the option Multiple Copies enter 2.

3. Select the tool Line. Select three consecutive points to create two sides of the octagon with Join C-a located in Contextual on the mouse menu. Press ESC to close the tool Line. See Figure 18.

Figure 18. Creating the first quadrant | Figure 19. Symmetry relative to the vertical axis | Figure 20. Symmetry relative to the horizontal axis