Several joint embodiments utilize variable clearance between the punch and the die to minimize {HEAD ~ strength variability} resulting from {TAIL ~ changing material thickness} 
resulting from
Several joint embodiments utilize variable clearance between the punch and the die to minimize { HEAD ~ strength variability } resulting from { TAIL ~ changing material thickness }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL