Create an Extrusion

Lets you create a set of extrusion vertices in various ways, depending on the requirements of your design and your personal preferences. It also lets you set the other attributes necessary to relate these vertices to a 3D extrusion representation.

The shape of an extrusion (EXTR) is defined by a loop (LOOP). The 2D geometry of the loop is defined by linking a set of vertices (VERTs), each with a position in the loop’s XY coordinate system. The Height (HEIG) attribute of the LOOP defines the distance by which the 2D shape is extruded (in the Z direction) to form the 3D extrusion volume

1. Using the Design Explorer navigate to the equipment element and select Create > Primitives from the main drop-down menu.

   The Primitives form appears.

2. Select the primitive required from the available menu. for example, Extrusion.

   

3. Using the Create Extrusion form, key in the Thickness of the extrusion.

4. Select from one of the Create Methods.

5. You can specify the position of a new positive or negative extrusion vertex (VERT) in a variety of ways.

6. Click on the icon which corresponds to the method you want to use for the next point.

   

   	Allows you to pick a point graphically using any of the standard cursor-picking methods
   	Allows you to identify a point by entering its explicit coordinates
   	Allows you to specify a distance and direction which define a point relative to the position of the preceding vertex
   	Allows you to construct a fillet arc with a specified radius between two picked tangent lines
   	Allows you to construct a fillet arc passing through three picked points
   	Allows you to construct a fillet arc with a specified radius, passing through two picked points, which curves towards a picked direction

In this example we have selected to create the extrusion by entering explicit coordinates, the Define Vertex form appears.

7. Click the Apply option.

   This will create the first vertex point.

8. By clicking the F8 option this will toggle between wire line and shaded image.

   

   

9. The Extrusion Vertices have an attribute Fradius, if we change this for the vertex 2 and 3 then this will modify the extrusion as shown.