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 lid(){
21.   translate([wall_thickness,wall_thickness,(box_height-wall_thickness)])
22.     cube([(box_length-wall_thickness),(box_width-(2*wall_thickness)),wall_thickness],false);
23.   translate([(wall_thickness/2),(wall_thickness/2),(box_height-lid_thickness-wall_thickness)])
24.     cube([(box_length-(wall_thickness/2)),(box_width-wall_thickness),wall_thickness],false);
25. }
26.  
27. module stacking_phase() {
28.   difference() {
29.     cube([box_length,box_width,(wall_thickness/2)],false);
30.     translate([(wall_thickness+1),(wall_thickness+1),0])
31.       cube([(box_length-(wall_thickness/2)-1),(box_width-(2*wall_thickness)-2),(wall_thickness/2)],false);
32.   }
33. }
34.  
35. difference() {
36.   color("grey")
37.   cube([box_length,box_width,box_height],false);
38.   union(){
39.     color("red")
40.     lid();
41.     color("orange")
42.     stacking_phase();
43.     for(x = [0:xboxes])
44.       for(y = [0:yboxes])
45.         pocket(x,y);
46.   }  
47. }
48.