The rocket is remixed via openSCAD using the source from:
https://www.thingiverse.com/thing:281036

The rocket launcher was modeled after the launcher in the videos from this make:
https://www.thingiverse.com/make:295823

Here are the values I used and why:
inner_diameter = 22.8; -- Fits over 1/2" PVC pipe
body_height = 180; //[10:100] -- Too short in Customizer, wanted a taller rocket.
nose_height = 50; //[2:100]
number_of_fins = 4; //[0:4]
fin_width = 30; //[2:50]
fin_height = 55; //[2:100]

/ [Extruder] /
// Width of a single wall/perimeter in mm - adjust to ensure model is sliced correctly
perimeter_width = 1.2; I needed to increase this to make the rockets more durable.