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