How to do Pinstripe

 From:  bemfarmer
Does anyone have any suggestions on how to do pinstripe?
Attached are some sweeps of a circle on a half catenary, and on an euler spiral/clothoid/spiro.
An end point that is blunter would be nice.

Also attached is a trace attempt, with irregular widths.

EDITED: 19 Feb 2014 by BEMFARMER