Here's one for you:
I use a set of locking pliers/Vise Grips for all my cable cutting needs. Just set the jaws completely closed and at medium clamping tension so they 'pop' when you latch it down. Sometimes for housings it will bend the tip a little. All you have to do correct this is take an awl and insert it into the innermost part of the end of the housing, twisting the handle back and forth as you push it in. That will restore/ensure roundness. If you
do get burrs (rare), then you can use a file, as someone else mentioned, or run it across a grinding wheel for a few ticks at a thirty or so degree angle.