// the three hatch parts didnt hot glue together very strongly // these four supports were printed and glued to the underside to // give them more support // the result was very strong, effectivly made it one maxlength=120; minlength=20; width=4; maxheight=20; minheight=5; for( i = [width:width*2:width*8]) { translate([0,i,0]) hull() { cube([maxlength,width,minheight]); translate([maxlength/2-minlength/2,0,maxheight-minheight]) cube([minlength,width,minheight]); } }