Metal strand lining protruding from ends of shifter housing What could I have done wrong to cause the metal strands within my shifter cable housing to protrude out the ends? Did I use the wrong ferrules (I also have black, plastic ones)? Did I get cheap cables? Did I cut the housing too short? I'd ask if I did a poor job cutting the housing, but I used the Park Tool CN-10 cable cutter which I thought did a fairly fine job of cutting these.
It looks like you have 4mm housing put into ferrules designed for 5mm housing. The black plastic ones should be the right ones.