Finally completely finished this piece.
Not sure if you can tell but all the edges are smoothed out,surface is polished, and it's now one nice flowing continuous line from the center of the spiral out. In a successful composition the eye should wander and if it follows a line it should continue on that course unabated.Nautilus shell,refined: Welded,cold formed,and plasma cut 1/8th inch stainless steel. Overall width at it's widest dimension-12 inches Weight-about 10 lbs.
It may not seem like much of a change but the REAL nautilus shell is enticingly tactile and I felt I needed to make mine that way as well...

By the way. The growth spiral of the CHAMBERED NAUTILUS ("Nautilus pompilius" ) follows a logarithmic spiral based on (3). It is NOT the Fibonacci spiral nor is it the Golden Spiral. These are popular misconceptions that are perpetuated by folks that aren't doing their homework.
It IS however a Gorgeous spiral as are MANY of the myriad logarithmic growth spirals in Nature...