To build this model you will need;
String (use any string that you would associate with kite flying. I recommend thin nylon string.)
Wire and Pliers
Prestik/Blue Tac/Putty/Small coin} to use as ballast
Something to wind the string around
A windy place to fly it in
Packing/Floor insulation/other lightweight foam sheets (I used the kind used for protecting eggs when you buy a tray of 30.)
Step 1: Making the Rotors
Cut 2 small circles out of the foam. These will help reduce friction. Make a small hole in the centre of each one. Then place all the parts mentioned (and 2 beads) onto the pin to create the rotor hub. The order should be like this: 0-o-O-X-O-o----------------
If 0=pin head, o=bead, -=pin shaft, X=rotor centre.
Also cut out a shape like the one shown in the 2nd last picture. This is what the shaft will be connected to the fuselage with.