diff --git a/pcie.scad b/pcie.scad
index 4e21c3e..d5c6d16 100644
--- a/pcie.scad
+++ b/pcie.scad
@@ -62,13 +62,17 @@ module trapezium_with_rectangle_2d(
 //trapezium_2d(base_width = 20, top_width = 10, height = 15);
 //translate([30, 0]) rectangle_2d(width = 8, height = 5);
 
-// Combined shape:
+// Combined shape extruded to 3D:
 rect_height_val = 1.7;
-trapezium_with_rectangle_2d(
-    trap_base_width = 10.95, 
-    trap_top_width = 5.5, 
-    trap_height = 4.0,
-    rect_width = 6.3,
-    rect_height = rect_height_val,
-    rect_offset = -rect_height_val/2  // Half of rectangle height to center it at base edge
-);
\ No newline at end of file
+extrude_height = 15;
+
+linear_extrude(height = extrude_height) {
+    trapezium_with_rectangle_2d(
+        trap_base_width = 10.95, 
+        trap_top_width = 5.5, 
+        trap_height = 4.0,
+        rect_width = 6.3,
+        rect_height = rect_height_val,
+        rect_offset = -rect_height_val/2  // Half of rectangle height to center it at base edge
+    );
+}
\ No newline at end of file