diff --git a/shape_gate.scad b/shape_gate.scad
index 464adf3..49ad4d9 100644
--- a/shape_gate.scad
+++ b/shape_gate.scad
@@ -8,8 +8,9 @@ module shape_gate (shape, throw, shaft_r, sharpness = 0) {
   function throw_travel(throw) = gate_height * tan(throw);
 
   hull(){
-    linear_extrude(0.1)
-      round_poly(shape, shaft_r, 0, sharpness);
+    translate([0,0, -(shaft_r / tan(throw))])
+      linear_extrude(0.1)
+        round_poly(shape, 0, 0, sharpness);
     translate([0,0,gate_height])
       linear_extrude(0.00001)
         round_poly(shape, shaft_r, throw_travel(throw), sharpness);