Customisable Windrad from rmd6502

Original Source under: https://github.com/rmd6502/openscad/blob/master/pinwheel.scad
It's great! Thank you rmd6502.

Endlich ein Windrad für Openscad. Danke.

It's a small script:

sides = 3;
angle = 360 / sides;
radius = 100;
rotate([0, 0, $t*angle]) union() {
difference() {
union() {
linear_extrude(10, scale=.525,twist=-22,slices=40) for (rot = [0 : angle : 359])
rotate(rot) translate([0,-1.5,0]) square([radius,3],center=false);
cylinder(h=10,r1=radius/8.5,r2=radius/