Hand Tools Archive

a good place to start decoding

Bill Tindall, E.Tn.
presuming you have an accurate picture or the piece at hand...... Set a divider to one of the radii. Then start walking it around trying to discover how to walk from the first radius to the next. In the case at hand by swinging the divider from the first radius to where the arc intersected the next arc, driving the point in there, the second radius center was where the point intersected the top angle. Soon it became apparent that the intermediate divider points lay on a line bisecting the two angle. The pattern spread as a function of the difference in these two angle (30 and 40 degree on the Figure). The spread makes the pattern graceful, not geometrically ridged.

It is easier than it sounds once you believe there is an underlying geometric pattern for the points.

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