To get rid of any extra sharpness, you'll need to just determine what part of the fret is catching your hand, and gently file that part down... quite often the corners of the frets where they meet the fretboard can be a bit of a problem. (Remember to tape off your fretboard first with masking tape!)
StewMac sells fret nippers
that do a fine job for cutting fretwire. They've got all kinds of other great tools for making fretwork easier. But i wouldn't recommend you do a fret job without proper guidance, unless you really don't care too much about the guitar and it's not a great loss if it gets screwed up.
Here's how you do it in a nutshell:
1. Cut the fretwire into frets that are longer than the width of your fretboard.
2. Bend the frets to an "over-arch" radius with two sets of pliers by gripping the tangs on the underside of the frets and bending inward gently. You can also pre-bend the fretwire before cutting it if you have StewMac's fretwire bender thingy.
3. Gently tap the frets into the slots at either edge of the fretboard, so they overhang the edges by a bit. (Quite often you can put some wood glue in the slots as well to increase the strength.)
4. Tap the frets down into the slots using a fret hammer
, starting at the middle and gently working your way to the outside. The arch expands and flattens out to match the radius of your fretboard.
5. Nip off the ends flush with the fretboard then smooth and bevel the edges with a flat file. Then crown and dress the frets.
Nobody makes harder frets because harder metals can't be extruded into the complex crown/tang shape. Parkers (with the exception of the P-3
have stainless steel frets, but they're glued to the fretboard rather than hammered into slots.