1. box_length=230;
2. box_width=155;
3. box_height=34.25;
4. xboxes=5;
5. yboxes=2;
6. wall_thickness=3;
7. lid_thickness=2;
8.  
9. module pocket(x=0,y=0){
10.   pocket_length=((box_length-((xboxes+1)*wall_thickness))/xboxes);
11.   //echo("pocket_length:",pocket_length);
12.   pocket_width=((box_width-((yboxes+1)*wall_thickness))/yboxes);
13.   //echo("pocket_width:",pocket_width);
14.   pocket_height=(box_height-wall_thickness-lid_thickness);
15.   //echo("pocket_height:",pocket_height);
16.   translate([(wall_thickness+(x*(pocket_length+wall_thickness))),(wall_thickness+(y*(pocket_width+wall_thickness))),wall_thickness])
17.     cube([pocket_length,pocket_width,pocket_height]);
18. }
19.  
20. module stacking_form(phase_index=1) {
21.   polyhedron(points = [
22.             [box_length,wall_thickness,0],                  // 0 left down front
23.             [box_length,(box_width-wall_thickness),0],      // 1 right down front
24.             [wall_thickness,(box_width-wall_thickness),0],  // 2 right down back
25.             [wall_thickness,wall_thickness,0],              // 3 left down back
26.             [box_length,0,(wall_thickness*phase_index)],         // 4 left up front
27.             [box_length,box_width,(wall_thickness*phase_index)], // 5 right up front
28.             [0,box_width,(wall_thickness*phase_index)],          // 6 right up back
29.             [0,0,(wall_thickness*phase_index)]                   // 7 left up back
30.            ],faces = [
31.             [0,1,2,3],  // bottom
32.             [4,5,1,0],  // front
33.             [7,6,5,4],  // top
34.             [5,6,2,1],  // right
35.             [6,7,3,2],  // back
36.             [7,4,0,3]   // left
37.   ]);
38. }
39.  
40. module lid_nose(cut=0) {
41.   nose_length=((box_length/10)-cut);
42.   nose_width=((wall_thickness-cut)/2);
43.   nose_height=(1-(cut/2));
44.   translate([(box_length-cut-(nose_width*1.5)),((box_width/2)-(nose_length/2)),(-nose_height-lid_thickness)])
45.     cube([nose_width,nose_length,nose_height+1]);
46. }
47.  
48. module lid(cut=0) {
49.   translate([0,box_width,0])
50.     rotate([180,0,0])
51.       polyhedron(points = [
52.         [(box_length-cut),wall_thickness,0],                                  // 0 left down front
53.         [(box_length-cut),(box_width-wall_thickness-cut),0],                  // 1 right down front
54.         [wall_thickness,(box_width-wall_thickness-cut),0],                    // 2 right down back
55.         [wall_thickness,wall_thickness,0],                                    // 3 left down back
56.         [(box_length-cut),(wall_thickness/2),lid_thickness],                  // 4 left up front
57.         [(box_length-cut),(box_width-(wall_thickness/2)-cut),lid_thickness], // 5 right up front
58.         [(wall_thickness/2),(box_width-(wall_thickness/2)-cut),lid_thickness],// 6 right up back
59.         [(wall_thickness/2),(wall_thickness/2),lid_thickness]                 // 7 left up back
60.         ],faces = [
61.         [0,1,2,3],  // bottom
62.         [4,5,1,0],  // front
63.         [7,6,5,4],  // top
64.         [5,6,2,1],  // right
65.         [6,7,3,2],  // back
66.         [7,4,0,3]   // left
67.       ]);
68.   lid_nose(cut);
69. }
70.  
71. module top(phase_index=1){
72.   translate([0,0,(box_height-wall_thickness)])
73.     stacking_form(phase_index);
74.   translate([0,0,(box_height-wall_thickness)])
75.     lid();
76. }
77.  
78. module stacking_phase(phase_index=1) {
79.   difference() {
80.     cube([box_length,box_width,(wall_thickness*phase_index)],false);
81.     stacking_form(phase_index);
82.   }
83. }
84.  
85. difference() {
86.   color("grey")
87.   cube([box_length,box_width,box_height],false);
88.   union(){
89.     color("red")
90.     top(1.1);
91.     color("orange")
92.     stacking_phase(1);
93.     for(x = [0:xboxes])
94.       for(y = [0:yboxes])
95.         pocket(x,y);
96.   }  
97. }
98.  
99. translate([0,(-5),0])
100.   rotate([180,0,0])
101.     lid(1);
102.