diff --git a/008-For-Loops/ball-bearing.scad b/008-For-Loops/ball-bearing.scad
new file mode 100644
index 0000000..b7cb807
--- /dev/null
+++ b/008-For-Loops/ball-bearing.scad
@@ -0,0 +1,17 @@
+$fa=1;
+$fs=0.5;
+
+difference() {
+  cylinder(d=30, h=5, center=true);
+  cylinder(d=25, h=6, center=true);
+}
+
+difference() {
+  cylinder(d=15, h=5, center=true);
+  cylinder(d=10, h=6, center=true);
+}
+
+for(t=[0:30:369])
+  rotate([0,0,t])
+    translate([10,0,0])
+      sphere(d=5, center=true);