diff --git a/lesson2.scad b/lesson2.scad
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+// Parameters
+keyhole_out_size = 200;
+keyhole_thickness = 100;
+keyhole_width = 40;
+keyhole_color = false;
+
+// Horseshoe shape
+//difference() {
+  /* union() { */
+  /*   // Main horseshoe shape */
+  /*   translate([0, size/2, 0]) { */
+  /*     rotate([90, 0, 0]) { */
+  /*       cylinder(r=size/2, h=thickness); */
+  /*     } */
+  /*   } */
+  /*   translate([0, -size/4, 0]) { */
+  /*     rotate([90, 0, 0]) { */
+  /*       cylinder(r=size/2, h=thickness); */
+  /*     } */
+  /*   } */
+  /*   translate([size/2, 0, 0]) { */
+  /*     rotate([0, 90, 0]) { */
+  /*       cylinder(r=size/4, h=thickness); */
+  /*     } */
+  /*   } */
+  /*   translate([-size/2, 0, 0]) { */
+  /*     rotate([0, 90, 0]) { */
+  /*       cylinder(r=size/4, h=thickness); */
+  /*     } */
+  /*   } */
+
+  /*   // Cut out center of horseshoe */
+  /*   translate([0, 0, thickness/2]) { */
+  /*     cylinder(r=size/4, h=thickness*2); */
+  /*   } */
+  /* } */
+//}
+module keyhole(withColors=keyhole_color) {
+  maybe_color=withColors?"red":undef;
+  color(maybe_color, 1.0) {
+    union() {
+      difference() {
+        difference() {
+          cylinder(r=keyhole_out_size/2, h=keyhole_thickness);
+          translate([0, -keyhole_out_size/2, 0]){
+            cube([150, keyhole_out_size, keyhole_thickness]);
+          }
+        }
+        cylinder(r=keyhole_out_size/2-keyhole_width, h=keyhole_thickness);
+      }
+      translate([0, -keyhole_out_size/2, 0]){
+        cube([keyhole_out_size, keyhole_width, keyhole_thickness]);
+      }
+      translate([0, keyhole_out_size/2-keyhole_width, 0]){
+        cube([keyhole_out_size, keyhole_width, keyhole_thickness]);
+      }
+    }
+  }
+}
+module outsite_plane() {
+  difference() {
+    cube([1000, 1000, 100]);
+    translate([100, 100, -1]){cube([800, 800, 800]);}
+  }
+}
+
+module caseplate(){
+  union(){
+    // Keyholes in low side
+    translate([-200, 100, 0]){
+      keyhole();
+    }
+    translate([-200, 900, 0]){
+      keyhole();
+    }
+    // Keyholes high side
+    translate([1200, 100, 100]){
+      rotate([0, 180, 0]) {keyhole();}
+    }
+    translate([1200, 900, 100]){
+      rotate([0, 180, 0]){keyhole();}
+    }
+
+    outsite_plane();
+  }
+}
+
+module base(){
+
+  translate([-800, 0, 0]){
+    difference(){
+      // We need to remove smaller cube
+      //and then puctuate the bottom with sylinder
+      //and cut the top off in the angle of the plate
+      cube([770, 1000, 1000]);
+      translate([100, 100, 100]){
+        cube([600, 800, 1000]);
+      }
+      translate([400, 500, -100]){
+        cylinder(r=300, h=200);
+      }
+      translate([400, -300, 1710]){
+        rotate([0, 150, 0]){
+          cube([1200, 1800, 1000]);
+        }
+      }
+    }
+  }
+
+}
+
+module floor(){
+  translate([-1400, -700, -20]){
+  color("grey", 1){
+  cube([2000,2000,20]);}}
+}
+
+translate([0, 0, 800]){
+  rotate([0, 150, 0]){
+    caseplate();
+  }
+}
+base();
+
+floor();
+
+