Cleaned up and added openscad parametric box

Box.scad

@@ -0,0 +1,77 @@
+$fn=25;
+
+x = 20;
+y = 10;
+z = 10;
+wall = 2;
+bottom = 1;
+
+difference() {
+    minkowski(){
+        cube([x+wall,y+wall,z+bottom], center=true);
+        cylinder();
+    }
+    
+    translate([0,0,bottom])
+     minkowski(){
+        cube([x,y,z], center=true);
+        cylinder();
+     }
+        
+
+
+translate([0,0,(z/2)]){
+    linear_extrude(height=1.5){
+        minkowski(){
+        square([x+(wall/2),y+(wall/2)], center=true);
+        circle();
+        }
+    }
+}
+}
+
+
+
+
+
+
+
+translate([x+10,0,2.5])
+rotate([180,1,0])
+difference() {
+    difference(){
+        translate([0,0,z/2+1])
+        minkowski(){
+            cube([x+wall,y+wall,2],center=true);
+            cylinder();
+        }
+        difference() {
+        minkowski(){
+            cube([x+wall,y+wall,z+bottom], center=true);
+            cylinder();
+        }
+        
+        translate([0,0,bottom])
+         minkowski(){
+            cube([x,y,z], center=true);
+            cylinder();
+         }
+            
+    
+    
+    translate([0,0,(z/2)]){
+        linear_extrude(height=1.5){
+            minkowski(){
+            square([x+(wall/2),y+(wall/2)], center=true);
+            circle();
+            }
+        }
+    }
+    }
+    
+        
+        cube([x+wall/2,y+wall/2,z+5],center=true);
+    cylinder(z*2,2,2,$fn=5, center=true);
+
+}
+}