Over all this was a neat effect. I started by just making a very large diameter, but short, rod section.
Once the spacers are glued up & the varnish applied, it's just a simple matter of cutting them to length. In this down-locking screw lock reel seat, the area of the spacer that fits under the threads had to be turned down to fit. The end result was a unique looking reel seat that seemed right at home on a bamboo fly rod.