• Right click on the frontal workplane.
• Select new sketch.
• Name the sketch "wing2".
• Offset the workplane by 300mm
• Paste the sketch onto the workplane.
• Scale the sketch to 25% of the original by entering .25 in the factor box.

The screen will look like Fig.5 if the steps have been followed correctly.

Now the sketches making up the wing have been positioned correctly, it is now time to join these and produce a solid model of the wing.

From the Feature Menu, highlight Loft Through Profiles option. The prompt box on the left will appear.

The loft feature takes each sketch and projects a solid surface through them to give the desired shape. It is vital to ensure that the same point on each sketch is traced to ensure a correct model. Initially the loft trace will not be positioned correctly to give the correct wing design (it very rarely is, unless each sketch has been drawn individually and all in the same direction!)

The screen should look like Fig. 6 with a curved line representing the loft path.

This curved path now must be adjusted so it passes through each sketch at the same point to give a straight line lofted path. The thin point of each sketch will be selected as this is the most easily identifiable point on each wing

cross-section.

Click on the Next Point tab on the loft feature dialogue box to move the loft point. Select the next sketch profile by highlighting it, then perform the same operation to move the loft point again. Repeat for the third profile sketch. The final loft profile should look like Fig. 7