Negative Primitive - worked example

Negative primitives need to belong to the solid primitive.

1. Using the Design explorer navigate to the primitive which is to own the negative primitive.

2. Select Create > Primitives from the main drop-down menu.

   The Create Primitives form appears.

3. Click Switch to Negative Primitives.

   The Create Negative Primitives form appears.

4. Select the Cylinder from the Create Negative Primitives form.

   

   The Create Negative Primitive form appears.

5. Key in the Height and Diameter required and click the Create option.

   The Primitives form changes with additional options.

6. In the Rotate section key in an Angle 90 and the Direction About W and click the Apply Rotation option.

   

   The negative cylinder now requires moving to its correct position.

7. Indicate the equipment and then click the Model Editor icon from the Model Editor Toolbar.

   The Equipment modification handle appears.

8. Click the right mouse button with the cursor over the equipment and select Edit Members of Equipment.

   

9. Once again click the right mouse button with the cursor over the negative equipment cylinder and select Edit CYLINDER.

   This allows the negative cylinder to be moved using the equipment modification handles.

10. Move the Negative cylinder to its required position.

    

11. To see the hole, select Settings > Graphics.

    The Graphics settings form appears.

12. Select the Representation tab and tick the Holes Drawn box and then click Apply.