Folding Propeller Assembly Generator

Fully customisable and printable folding propeller set. Including a hub and a spinner.
This is based on the 'Parametric Folding Propeller Generator' by @BouncyMonkey (https://www.thingiverse.com/thing:3506762)
Also the Polyline code that is found in the spinner is from https://openhome.cc/eGossip/OpenSCAD/index.html.

Notes:
1. To use the code: place all the SCAD files in the same directory.
2. You would normally need to edit only the parameter in **Folding_Prop.scad**
3. Always orient the blades such that the holes are perpendicular to the print bed. This gives maximum strength to the printed part.
4. When printing the hub the same rule as point 3 has to be applied. (though the seemingly obvious choice would be to print it flat without supports)
5. Print at 5-8degC higher hotend temperature than normal. Get that small boost in inter-layer adhesion.
6. The 7x4inch tractor propeller is shown as an example.
7. I would suggest un-comment only the feature you want to(makeHub();