Step 1.
Use a piece of 4" x 4" (100mm x 100mm) wood 40" (1m) long to make the spiral Wind-Spinner.
Pencil-mark the top side according to the dimensions given below (also see the photo on the right).
Then cut along the point-shaped pencil lines, creating a wedge.
Step 2.
Turn the wood on its side. Pencil-mark another point-shape on the face of the wedge, as shown on the drawing below and
in the picture on the right.
Then cut that point also.
Step 3.
Measure along line (a) 1 3/16" (29mm) in from one edge and pencil a line from there to the point, as shown in the drawing below.
In order to cut along the pencil-line using a circular saw with the blade set on a 45° angle, ensure the pencil-line is on the same edge of the wood, as is shown in the drawing and photo.
Step 4.
Set the blade at 45° on your circular saw and cut along the pencil-line beginning from the point.
Then cut along line (a) with a handsaw to get rid of the off-cut piece .
Do the same to all four sides.
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Page 2: Shaping the cone