diff --git a/paterson16.scad b/paterson16.scad
index b627024..a0a5c70 100644
--- a/paterson16.scad
+++ b/paterson16.scad
@@ -52,35 +52,39 @@ module reel_frame () {
 }
 
 module reel_top () {
-    //outer wall
-    translate([0, 0, SPOKE_H / 2]) difference () {
-        cylinder(r = REEL_D / 2, h = SPOKE_H, center = true);
-        cylinder(r = (REEL_D / 2) - REEL_OUTER_WALL_W, h = REEL_OUTER_WALL_H + 1, center = true);
-    }
-  
-    //inner wall
-    translate([0, 0, SPOKE_H / 2]) difference () {
-        cylinder(r = REEL_INNER_D / 2, h = SPOKE_H, center = true);
-        cylinder(r = (REEL_INNER_D / 2) - REEL_INNER_WALL_W, h = REEL_INNER_H + 1, center = true);
-       translate([0, 0, -SPOKE_H / 2]) intersection () {
+    difference () {
+        union () {
+            //outer wall
+            translate([0, 0, SPOKE_H / 2]) difference () {
+                cylinder(r = REEL_D / 2, h = SPOKE_H, center = true);
+                cylinder(r = (REEL_D / 2) - REEL_OUTER_WALL_W, h = REEL_OUTER_WALL_H + 1, center = true);
+            }
+          
+            //inner wall
+            translate([0, 0, SPOKE_H / 2]) difference () {
+                cylinder(r = REEL_INNER_D / 2, h = SPOKE_H, center = true);
+                cylinder(r = (REEL_INNER_D / 2) - REEL_INNER_WALL_W, h = REEL_INNER_H + 1, center = true);
+            }
+            
+            translate([0, 0, SPOKE_H / 2]) difference () {
+                cylinder(r = (REEL_INNER_D + REEL_D) / 4, h = SPOKE_H, center = true);
+                cylinder(r = ((REEL_INNER_D + REEL_D) / 4) - REEL_INNER_WALL_W, h = REEL_INNER_H + 1, center = true);
+            }
+          
+            //spokes
+            translate([0, 0, SPOKE_H / 2]) for (i = [0:5]) {
+                rotate([0, 0, i * (360 / 6)]) {
+                    translate([0, ((REEL_D - REEL_INNER_D) / 2) - 1.5, 0]) {
+                        cube([4.5, (REEL_D - REEL_INNER_D) / 2, SPOKE_H], center = true);
+                    }
+                }
+            }
+        }
+        intersection () {
             cylinder(r = 30.5 / 2, h = 6, center = true);
             rotate([0, 45, 0]) cube([3, 31, 3], center = true);
         }
     }
-    
-    translate([0, 0, SPOKE_H / 2]) difference () {
-        cylinder(r = (REEL_INNER_D + REEL_D) / 4, h = SPOKE_H, center = true);
-        cylinder(r = ((REEL_INNER_D + REEL_D) / 4) - REEL_INNER_WALL_W, h = REEL_INNER_H + 1, center = true);
-    }
-  
-    //spokes
-    translate([0, 0, SPOKE_H / 2]) for (i = [0:5]) {
-        rotate([0, 0, i * (360 / 6)]) {
-            translate([0, ((REEL_D - REEL_INNER_D) / 2) - 1.5, 0]) {
-                cube([4.5, (REEL_D - REEL_INNER_D) / 2, SPOKE_H], center = true);
-            }
-        }
-    }
 }