diff --git a/examples/turtle/fidget_ball.scad b/examples/turtle/fidget_ball.scad
new file mode 100644
index 00000000..b91e7356
--- /dev/null
+++ b/examples/turtle/fidget_ball.scad
@@ -0,0 +1,85 @@
+$fn = 48;
+
+radius = 40;
+thickness = 2;
+layers = 5;
+spacing = 2.5;
+support_thickness = 1;
+drill_angle = 36;
+
+fidget_ball(radius, thickness, layers, spacing, support_thickness);
+
+module drill(deep, drill_angle) {
+    a = drill_angle / 2;
+	r = deep * tan(a);
+	
+    difference() {
+		children(0);
+		union() {
+			for(i = [0:3]) {
+				rotate([90 * i, 0, 0])
+				translate([0, 0, -deep])
+				linear_extrude(deep, scale = 0.01)
+					circle(r);
+			}
+			for(i = [90, -90]) {
+				rotate([0, i, 0])
+				translate([0, 0, -deep])
+				linear_extrude(deep, scale = 0.01)
+					circle(r);
+			}
+
+			for(i = [0:3]) {
+				rotate([0, 54.7356, 45 + i * 90])
+				translate([0, 0, -deep])
+				linear_extrude(deep, scale = 0.01)
+					circle(r);
+
+				rotate([0, -125.2644, 45 + i * 90])
+				translate([0, 0, -deep])
+				linear_extrude(deep, scale = 0.01)
+					circle(r);
+			}
+		}	
+	}
+}
+
+module hollow_sphere(radius, thickness) {
+    difference() {
+		sphere(radius);
+		sphere(radius - thickness);
+	}
+}
+
+module support(i, sphere_r, height, support_thickness, drill_angle) {
+    a = drill_angle / 2;
+	support_r = 2 * sphere_r * sin(a / 2) ^ 2;
+
+	sina = sin(a);
+	tana = tan(a);
+
+	translate([0, 0, -sphere_r])
+	rotate_extrude()
+	translate([sphere_r * sina, 0])
+	    polygon([[0, support_r], [-.75, support_r], [-tana * support_r - support_thickness, 0], [-tana * support_r, 0]]);
+
+	translate([0, 0, -sphere_r - height * i])
+	linear_extrude(height * i)
+	difference() {
+	    circle(sphere_r * sina - tana * support_r);
+		circle(sphere_r * sina - tana * support_r - support_thickness);
+	}
+}
+
+module fidget_ball(radius, thickness, layers, spacing, support_thickness) {
+	r_step = thickness + spacing;
+	
+	drill(radius, drill_angle)
+	for(i = [0:layers - 1]) {
+		hollow_sphere(radius - r_step * i, thickness);
+	}
+	
+	for(i = [0:layers - 1]) {
+		support(i, radius - r_step * i, r_step, support_thickness, drill_angle);
+	}
+}
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