Fig. 5.

1. Choose the Select Faces tool.
2. Select with the right mouse button in the drawing area
3. Choose View, and then Autoscale (This makes the block fill the screen area)
4. Move the cursor slightly inside one of the edges of the top face when all the top face edges of the rectangle are pre-highlighted in light blue. Select the face (the line goes red)
5. From the Workplanes menu choose Plane of Object.
6. In the dialogue window select OK to accept the default names
7. From the View menu choose Plan.
8. Choose the Create Circle tool.
9. Draw the circle towards the left hand side of the rectangle.
10. Move the cursor to the outside edge of the circle and double click the left mouse button
11. In the Properties dialogue box enter the Radius to 25mm and set the Centre to (-15, 0) to move the circle to the required place.
12. Select OK.

1. From the View menu choose Isometric.
2. Choose the Extrude Profile tool
3. In the Extrude dialogue box check Above workplane, Add material, and distance 10mm.
4. Select OK. (This will draw a disc on the top of the rectangle).