height = 15;
$fn= 20;
-cube([20, 4, 2]);
-
-cylinder(r=4, h=height);
-
-translate([30,0,0])
- cylinder(r=8, h=height);
+cylinder(r=7, h=height);
+
+for (r= [0:4]) {
+ rotate(r * 72) {
+ d = 10 * pow(1.5, r);
+ cube([d, 3, 2]);
+ translate([d, 0,0])
+ cube([7, 7, height]);
+ }
+}