1. Once WINGA is saved leave the file open.
2. From the Workplane menu choose Transform Axes. (Notice that the green solid arrows which indicate above workplane have now changed to hollow arrows indicating below workplane.)
3. In the Properties box select the Rotate option and enter 90
4. Select OK. (Notice that the green arrow has moved. This has now transformed the wing so that it will become the opposite wing.)
5. From the File menu choose Save and name the design as WINGB

Fig 10.

1. Start a new Design
2. From the View menu choose Plan
3. With the Create Straight tool draw a horizontal line to the right from the centre of the green arrow. (Holding down the SHIFT key restrains lines to the vertical or horizontal.)
4. Move the cursor over the line and double click the right mouse button.
5. In the Properties box set the length of line to 9 metres.
6. Select OK (Due to the size the line is not visible.)
7. From the View menu choose Autoscale to see the line from the centre of the green arrow
8. Construct a vertical line from the green arrow/horizontal line which slopes to the right
9. Select the Constrain Size tool
10. Select the vertical line and drag to the side. This will gives a dimension which constrains the length of the line
11. Double click on the line
12. In the Properties box set the line length to 6 metres
13. Select OK.
14. Right click the mouse button in the drawing area and choose View menu and select Autoscale.
15. With the Create Straight tool draw a horizontal line from the top of the 6 metres line.
16. Make the line 3.5 metres long using a Constraint
17. Draw a line from the right-hand end of the above line to the right-hand end of the 9 metre line. This will give the basic shape of the tail fin.
18. Select the front sloped line using the Select Line tool and with the arc cursor, drag the line inwards to give a curve.
19. To complete the shape of the fin, fillet the top front corner.
20. Select the Fillet Lines tool
21. In the Properties box enter 0.5 metres
22. Move the cursor to the point where the curved line meets the top horizontal line. Both lines will turn blue and the cursor icon changes. Hold the left mouse button down and drag inwards to produce the fillet.