The method can comprise providing a first tool set formed by an outer fin grooving tool, an outer fin forming tool, and {HEAD ~ a microscale channel} grooving {TAIL ~ tool} 
grooving
The method can comprise providing a first tool set formed by an outer fin grooving tool , an outer fin forming tool , and { HEAD ~ a microscale channel } grooving { TAIL ~ tool }
OTH OTH OTH OTH OTH OTH 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 REL TAIL TAIL TAIL TAIL TAIL