Use Metal slug that came with new schick or an old blade dulled, hold it over new Feather blade, (Pro only), hold together with vise grip pliers, snip to same length with aviation metal snips. Stone rough snipped edge with knife stone. Carefully slide shortened blade in old magazine with needle nose pliers, ( hold follower down with toothpick etc.) then inject it into razor. 5 minutes tops. I get 10 smooth shaves out of these for 5 min. work. However just got a Cobra,.... soooo
COBRA CLASSIC Feather Pro
SCHICK INJECTOR Type G,N
PAL SS INJ.ADJ. PERSONNA SS INJ.
Cut down Feather Pro Blades/Schick German
MERKUR PROGRESS Merkur Blades
CREMO CREAM, NANCY BOY Replenishing
Sierra Cup 8oz. SS