1 files changed, 1 insertions, 1 deletions

diff --git a/fanduct.scad b/fanduct.scad
index 7a9e205..3e2a15e 100644
--- a/fanduct.scad
+++ b/fanduct.scad
@@ -111,3 +111,3 @@ module fanduct(type=type,ductshape=ductshape) {
      translate([0,0,-epsilon])
-     cylinder(r=fanduct_ir+fanduct_shell+1,h=fanduct_elevation+.1+2);
+     cylinder(r=fanduct_ir+2*fanduct_shell+fanduct_w+1,h=fanduct_elevation+.1+2);
     }