diff --git a/cad/display-cover.scad b/cad/display-cover.scad
index 286c893..a9c7541 100644
--- a/cad/display-cover.scad
+++ b/cad/display-cover.scad
@@ -1,38 +1,27 @@
-module rpi4_cover(){
-    pi_height=28;
-    pi_width=104;
-    
-    difference(){
-      translate([31+thickness+10, 0, height])
-        chamferCube(pi_width, depth+(thickness*2), pi_height+thickness, 8, [0, 0, 1, 1], [0, 0, 0, 0], [0, 0, 0, 0]);
-        
-      translate([31+thickness+10, thickness, height])
-        chamferCube(pi_width, depth, pi_height, 8, [0, 0, 1, 1], [0, 0, 0, 0], [0, 0, 0, 0]);
-        
-      translate([31+thickness+62, (depth+(thickness*2))/2, height+pi_height])
-        cylinder(h=thickness, d=41.5);
-      
-      // hdmi gap
-      translate([thickness+95, depth+thickness, height])
-        cube([25, 0.8, 17]);
-      
-      // keyboard cabel hole
-      translate([width/2+thickness-6, thickness+1, 20])
-        rotate([90, 0, 0])
-          #cylinder(h=thickness+1, d=3);
-      
-      translate([width/2+thickness+6, thickness+1, 20])
-        rotate([90, 0, 0])
-          #cylinder(h=thickness+1, d=3);
-    }
+$fn=32*2;
+thickness=1.6;
+width=208.2;
+depth=70.2;
+height=10;
 
-    // logo
-    translate([31+thickness+62, (depth+(thickness*2))/2, height+pi_height])
-      linear_extrude(height=1.6)
-        resize([42, 42, 0])
-          import(file="mk-logo.svg", center=true);
+// cover
+difference(){
+  translate([0, 0, 0])
+    chamferCube(width+(thickness*2), depth+(thickness*2), height+thickness, 8, [0, 0, 1, 1], [0, 1, 1, 0], [0, 0, 0, 0]);
+    
+  translate([thickness, thickness, 0])
+    chamferCube(width, depth, height, 8, [0, 0, 1, 1], [0, 1, 1, 0], [0, 0, 0, 0]);
+    
+  translate([(width+(thickness*2))/2, (depth+(thickness*2))/2, height])
+    cylinder(h=thickness, d=41.5);
 }
 
+// logo
+translate([(width+(thickness*2))/2, (depth+(thickness*2))/2, height])
+  linear_extrude(height=1.6)
+    resize([42, 42, 0])
+      import(file="mk-logo.svg", center=true);
+
 module chamferCube(sizeX, sizeY, sizeZ, chamferHeight, chamferX, chamferY, chamferZ) {
   chamferX = (chamferX == undef) ? [1, 1, 1, 1] : chamferX;
   chamferY = (chamferY == undef) ? [1, 1, 1, 1] : chamferY;