Double Butterfly Kite

The canes F and G are formed from 5 mm. centre cane. They are each 2 ft. 41/2 in. in length. Tie F to the top end of B, and bring it in a curve and under C, to a point which is 11/2 in. above the centre mark on the backbone, where it is glued, bound round and tied. G is fastened to the top end of C, and, bringing it in a curve over B, is secured at the point where F crosses the back­bone. The ends of these two canes F and G are tied at points which are 3/8 in. above the pencil marks on B and C.

Next, add the canes, H and I. These are cut from 5 mm. centre cane and are each 1 ft. 7 in. in length. Bind them to the top ends of D and E. Bring H in a curve, under E and over B, to the bottom joint on the backbone, and tie it at this place. Bring I, under D and C, to the same joint, and tie. All tying points are shown in Fig. 15. It is a good thing to flatten the canes slightly with a sharp knife at these tying points, so that they will hold better. Smear the binding also with thin glue to keep them in position. Before proceeding any farther, inspect the framework to make sure that all the curves match on each side of the backbone.

The framework now has to be curved to a bow shape. This is achieved by firm but gentle pressure of the hands, and by means of bowstrings. These strings are tied to the ends of the frame­work (see Fig. 15). They tie underneath and clear of the backbone. The depth of the curve at the top of the wings, measuring from the centre of the bowstrings is 2 in. The smaller bowstrings are added to maintain the bow shape. Bracing strings are added as in Fig. 15. These help to distribute the strain which is imposed when the kite is in flight.

Cover the framework with unbleached greaseproof paper, which is obtained in sheets measuring 20 in. x 30 in. Two sheets will be needed. Lay the framework on these and carefully mark out the required shape with a pencil. Allow a margin of 2 in. all round and cut out. Cut slits in the margin to facilitate the work of gluing it to the frame. The reader may find it easier to make the cover before the framework is bowed. Cut two bodies for the butterflies from thin cardboard, each 1 ft. 2 in. in length.