diff --git a/cad/display.scad b/cad/display.scad
index a7290fa..87ad665 100644
--- a/cad/display.scad
+++ b/cad/display.scad
@@ -33,9 +33,10 @@ translate([146.6, 0, 0])
 // raspberry pi 4 cover
 rpi4_cover();
 
-// hinge test
-//translate([width+(thickness*2)/2), -20, 0])
-  //male_hinge();
+// display hinge
+translate([(width+thickness*2)/2, -9, 6.57])
+  rotate([90, 270, 0])
+    male_hinge();
 
 module usb_compartment(){
   usb_tray_width=31;
@@ -141,12 +142,38 @@ module sloped_walls(width, depth, height, thickness){
   }
 }
 
+module tab(length, thickness){
+  difference(){
+    union(){
+      translate([0,0,-5])
+        cube([length, thickness, 10], center=true);
+
+        rotate([90,0,0])
+          cylinder(h=thickness, d=length, center=true);
+      }
+
+      rotate([90,0,0])
+        cylinder(h=20, d=5, center=true);
+    }
+}
+
 module male_hinge(){
-    translate([0, 0, -10+th/2])
+  th=2.90;  //Thickness of solid tabs
+  sp=3.10;  //Width of seperation gap
+  w=15.14;  //Width of base
+  l=13.14;  //length of base
+
+  translate([0, 0, -10+th/2])
+    hull(){
       cube([l, w, th], center=true);
-    //generating 2 tabs with sp spacing
-    translate([0, -sp, 0])
-      tab();
-    translate([0, sp, 0])
-      tab();
+
+      translate([-l/2, -w/2-4, -2])
+        cube([l+4, w+8, 0.1]);
+    }
+
+  //generating 2 tabs with sp spacing
+  translate([0, -sp, 0])
+    tab(l, th);
+  translate([0, sp, 0])
+    tab(l, th);
 }
\ No newline at end of file