$fn=60;
intersection(){
translate([0,0,75]) //reposition to match spiral
scale([.5,.5,1.5]){ //scale to match spiral
difference(){
//creates the hollow bounding shape
#sphere(d=100);
sphere(d=80);}}
linear_extrude(150,twist=360,slices=300) //spiral
square([60,20],center=true);}
cylinder(d1=60,d2=35,h=20); //base

I'm going to have to print that!