diff --git a/threading.scad b/threading.scad
index 845915a..16e2686 100644
--- a/threading.scad
+++ b/threading.scad
@@ -775,9 +775,9 @@ module square_threaded_nut(
 // Example(2D): Thread Profile, ball_diam=3, ball_arc=120
 //   projection(cut=true) ball_screw_rod(d=10, l=15, pitch=5, ball_diam=3, ball_arc=120, orient=BACK, $fn=24);
 // Examples(Med):
-//   ball_screw_rod(d=15, l=20, pitch=8, ball_diam=5, ball_arc=120, $fa=1, $fs=1);
-//   ball_screw_rod(d=15, l=20, pitch=5, ball_diam=4, ball_arc=120, $fa=1, $fs=1);
-//   ball_screw_rod(d=15, l=20, pitch=5, ball_diam=4, ball_arc=120, left_handed=true, $fa=1, $fs=1);
+//   ball_screw_rod(d=15, l=20, pitch=8, ball_diam=5, ball_arc=120, $fa=1, $fs=0.5);
+//   ball_screw_rod(d=15, l=20, pitch=5, ball_diam=4, ball_arc=120, $fa=1, $fs=0.5);
+//   ball_screw_rod(d=15, l=20, pitch=5, ball_diam=4, ball_arc=120, left_handed=true, $fa=1, $fs=0.5);
 module ball_screw_rod(
     d, l, pitch, 
     ball_diam=5, ball_arc=100,