A bead of {HEAD ~ glue} is placed between {TAIL ~ glue flap} 24 to secure edge 23 to glue flap 24 and allowed to dry 
A bead of { HEAD ~ glue } is placed between { TAIL ~ glue flap } 24 to secure edge 23 to glue flap 24 and allowed to dry
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH