thickness=18;
L=250;
H=250;
roofH=250;
hole=70;
explode=0;
drill=6;
holeBlock=8;

laser=0;

module frontBack(hole){
    difference(){
        cube([2*thickness+L,thickness,H+thickness*6],center=true);
        translate([0,0,-H/10]){
            rotate([90,0,0])
               cylinder(d=hole,H,center=true,$fn=100);
                translate([0,0,-hole/4])
                   cube([hole,hole,hole/2],center=true);
        }
        
        minkowski(){
            translate([0,0,(-H-thickness)/2]) 
                cube([L-thickness*4+thickness,thickness*2,thickness-drill+2],center=true);
            rotate([90,0,0])
               cylinder(d=drill,h=0.01,center=true,$fn=40);
        }
        minkowski(){
            translate([0,0,(H+thickness)/2])
                cube([L/2+thickness,thickness*2,thickness-drill+2],center=true);
            rotate([90,0,0])
                cylinder(d=drill,h=0.01,center=true,$fn=40);
        }
            
   }
   
}



module bottom(){
    
difference(){
    union(){
    cube([L,H,thickness],center=true);
  
    minkowski(){
       cube([L+thickness*4,H/2,thickness],center=true);
       cylinder(d=thickness,h=0.001,$fn=100);
    }
    
    translate([0,-thickness*4,0])
        minkowski(){
        cube([L-thickness*4,H+thickness*4+thickness*8,thickness],center=true);
        cylinder(d=thickness,h=0.001,$fn=100);
   }
   }
   
   for(i=[0:3])
   rotate([0,0,90*i]){
   translate([L/4.5,L/2+thickness+holeBlock/2,0])
        cylinder(d=8,h=thickness+1,center=true,$fn=20);
   translate([0,L/2+thickness+holeBlock/2,0])
        cylinder(d=8,h=thickness+1,center=true,$fn=20);
   translate([-L/4.5,L/2+thickness+holeBlock/2,0])
        cylinder(d=8,h=thickness+1,center=true,$fn=20);
   }
}
}

module top(){
    difference(){
    union(){
    cube([L,H,thickness],center=true);
    minkowski(){
        cube([L+thickness*4,H/2,thickness],center=true);
        cylinder(d=thickness,h=0.001,$fn=100);
    }
    minkowski(){
        cube([L/2,H+thickness*4,thickness],center=true);
        cylinder(d=thickness,h=0.001,$fn=100);
    }
   }
   for(i=[0:3])
   rotate([0,0,90*i]){
   translate([L/4.5,L/2+thickness+holeBlock/2,0])
        cylinder(d=8,h=thickness+1,center=true,$fn=20);
   translate([0,L/2+thickness+holeBlock/2,0])
        cylinder(d=8,h=thickness+1,center=true,$fn=20);
   translate([-L/4.5,L/2+thickness+holeBlock/2,0])
        cylinder(d=8,h=thickness+1,center=true,$fn=20);
   }
   }
}

module side(){
difference(){
    cube([thickness,L,H+thickness*6],center=true);
    minkowski(){
        translate([0,0,(-H-thickness)/2]) 
            cube([thickness*2,H/2+thickness,thickness-drill+2],center=true);
        rotate([0,90,0])
           cylinder(d=drill,h=0.01,center=true,$fn=40);
    }
    minkowski(){
        translate([0,0,(H+thickness)/2]) 
            cube([thickness*2,H/2+thickness,thickness-drill+2],center=true);
        rotate([0,90,0])
           cylinder(d=drill,h=0.01,center=true,$fn=40);
    }
}
}

if(laser==0)
{
    translate([0,0,H/2]){
       translate([0,0,(-H-thickness)/2-explode])
           bottom();
        
       translate([0,0,(H+thickness)/2+explode])
           top();
        
       translate([0,(H+thickness)/2-explode,0])
            frontBack(hole=0);
        
        translate([0,(-H-thickness)/2-explode,0])
            frontBack(hole=hole);
        
        translate([(-H-thickness)/2-explode,0,0])
            side();
        
        translate([(H+thickness)/2+explode,0,0])
            side();
        }
    }
 else
    projection(){
        rotate([90,0,0])
        frontBack(hole=hole);
        //bottom();
        //translate([H+100,0,0])
        //top();
        //rotate([0,0,90])
        //rotate([0,90,0])
        //side();
        //rotate([90,0,0])
          //  frontBack(hole=0);
   }