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