Hose Adapter/Funnel (Parametric, OpenSCAD)

Fully parameterizsed OpenSCAD file allows you to control:

* Outside diameters
* Wall thickness
* Inside diameters (implied by the above two)
* Lengths of A, A-B, and B segments

If you want to control the inside dimension for either end, set the outside diameter to inside_diameter + 2 x thickness.

For OpenSCAD newbies:

* Load .scad file into OpenSCAD
* Select the Window menu, and uncheck “Hide Customizer”
* Enter the parameters you want into the Customizer
* Select Design menu, Render (or F6)
* Select File menu, Export, Export as STL (or F7)
* Slice the STL file using your favourite slicer, and print!