Nautilus Lampshade

The Nautilus lampshade is 10H x 10W x 5.75D -inches.  The lampshade contains 322 pieces.  Firstly, I got out my very old high school geometry book.  With the help of the MS Excel®, I calculated the points along the spirals of Archimedes intersecting with an oval.  Drew the pattern.  I used a series of jigs to construct the lampshade.

• Stained Glass