A very significant amount of {TAIL ~ tolerance} is allowed for the fit between the blade and the slot, thereby reducing the cost associated with {HEAD ~ highly accurate 3 D joints} 
A very significant amount of { TAIL ~ tolerance } is allowed for the fit between the blade and the slot , thereby reducing the cost associated with { HEAD ~ highly accurate 3 D joints }
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD