BoltlessStave for Transfiguration Bustle's Length

This is part of the length changing mechanism from our project from [Americas Greatest Makers](https://web.archive.org/web/20170512222022/https://www.americasgreatestmakers.com/). We have an [Instructable](http://www.instructables.com/id/Transfiguration-Bustle-Length) that describes the kit in detail.

We initially used bolts to hold the parts together. But they needed to be cleaned up and then threaded after printing. Also when they were assembled you needed to tighten the 6-32 bolts just