Fully Customizable Configurable Model Rocket Fin Guide

Based on the original SCAD file by garyacrowellsr at https://www.thingiverse.com/thing:4292667.
All drop-down menus and slider controls (except Tube Clearance mm) have been removed and replaced with open-ended fields to customize as you please.
Note: If your fin guides are not showing up on a larger outer diameter tube, increase the Guide Span mm until they begin showing again.
Original documentation remains below this line.

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This is a configurable and printable guide for positioning and gluing fins to the body tube of a model rocket. Configuration options include the number of fins, body size, fin thickness, and other options for adjusting the size and strength of the print.

Fin positioning guides like this are not new, but it was done in a nice printed implementation by Dave Juliano in this thread on The Rocketry Forum. I liked the idea, so I stole it, turning it into the OpenSCAD Customizer implementatio