diff --git a/src/constants.rs b/src/constants.rs
index b0c1818..553d9eb 100644
--- a/src/constants.rs
+++ b/src/constants.rs
@@ -5,3 +5,4 @@ pub const LENGTH: f32 = 0.0;
 pub const STRUTS: usize = 10;
 pub const STRUT_WIDTH: f32 = 2.4;
 pub const SPAR_SIDE_WIDTH: f32 = 0.75;
+pub const FUSELAGE_GAP: f32 = 10.0 * IN2MM;
diff --git a/src/main.rs b/src/main.rs
index dcbb1d0..563e00f 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -9,11 +9,25 @@ fn main() {
     let mut scad_file = ScadFile::new();
     scad_file.set_detail(50);
 
-    let e393 = selig::parse(include_str!("../e393.selig"));
+    // cambered airfoil, used in the wing
+    let e393: Airfoil = selig::parse(include_str!("../e393.selig"));
+
+    // symetric airfoil, used in the control surfaces
+    let exxx: Airfoil = selig::parse(include_str!("../e393.selig"));
 
     let mut wing = scad!(Translate(vec3(0.0,0.0,0.0)));
-    for strut_idx in 0..STRUTS {
-        let mut transform = scad!(Translate(vec3(0.0, strut_idx as f32 * 30.0 ,0.0)));
+
+    for strut_idx in 0..STRUTS + 2 {
+        let port: bool = strut_idx % 2 == 1;
+        let out: usize = strut_idx/2;
+
+        let mut spacing = WINGSPAN/2.0 * out as f32 + FUSELAGE_GAP / 2.0;
+
+        println!("{port} {out} {spacing}");
+
+        if port { spacing = -spacing };
+
+        let mut transform = scad!(Translate(vec3(0.0, spacing ,0.0)));
 
         transform.add_child(strut(&e393, CHORD, STRUT_WIDTH));
         wing.add_child(transform);
@@ -24,18 +38,19 @@ fn main() {
     scad_file.write_to_file(String::from("out.scad"));
 }
 
-fn strut(airfoil: &Airfoil, length: f32, width: f32) -> ScadObject {
+/// returns a extruded airfoil with the given dimensions
+fn strut(airfoil: &Airfoil, chord: f32, width: f32) -> ScadObject {
     let aerofoil = scad::PolygonParameters::new(airfoil.clone());
     let shape = scad!(Polygon(aerofoil));
 
     let extrude = LinExtrudeParams {
         height: width,
-        slices: 5,
+        center: true,
         ..Default::default()
     };
 
     let unit: Vector3<f32> = Vector3::new(1.0, 1.0, 1.0);
-    let scaled = scad!(Scale(unit * length); shape);
+    let scaled = scad!(Scale(unit * chord); shape);
     let strut = scad!(LinearExtrude(extrude); scaled);
     let rotated = scad!(Rotate(90.0, vec3(1.0, 0.0, 0.0)); strut);
     rotated