diff --git a/sanding_stick.png b/sanding_stick.png
new file mode 100644
index 0000000..84f84a5
Binary files /dev/null and b/sanding_stick.png differ
diff --git a/sanding_stick.scad b/sanding_stick.scad
index ff7635f..2d6dd8b 100644
--- a/sanding_stick.scad
+++ b/sanding_stick.scad
@@ -28,10 +28,11 @@ difference() {
     }
 }
 
+// inside guide stick
 translate([0, 10, 0]) {
     cube([
         band_length - 20 - spring_length, 
-        guide_thickness - 0.12, 
-        guide_thickness - 0.12
+        guide_thickness - 0.2, 
+        guide_thickness - 0.2
     ]);
 }