Model Rocket - Configurable Centering / Cluster Ring Generator

This Thing is an OpenSCAD file that uses its customizer feature to create centering rings used in complex model and high-power rocketry designs. It will produce either .stl files for printing, or .dxf files for laser cutting or CNC routing.

* Features:
* Selectable outer diameter from dropdown box of standard tube sizes, or specify exact diameter.
* Adjustable ring thickness.
* Up to eight 'rings' of motor tubes or mounting holes, diameters selected from dropdown boxes of standard tube sizes, or specify exact diameters.
* Selectable number of tubes in each ring.
* Adjustable center offset and rotation for each ring.
* Optional center cross-hair for each tube cutout.
* Up to three 'rings' of fin slots.
* Selectable number of slots in each ring.
* Adjustable width and depth of each slot ring.
* Adjustable rotation of each slot ring.
* The position of each feature is printed in the console window in polar a