Dang . . . I did that once, let me tell you that is going to be a real butt-itch!
Do yourself a favor if you plan on trying to shatter it - wear gloves, wear goggles AND wear a face shield. I have a nice scar in the meat of my left thumb/palm from a tap that shattered while I was beating on it with a hardened punch.
I felt a slight twinge of pain and looked at it and it was bleeding a little. I didn't think anything of it because I didn't realize a piece of the tap was deep in my hand. A few weeks later at a regular drs appt I asked the doc to look at it and after an xray and a few seconds with a scalpel . . . it felt worse, but improved a lot over the next few days.
oh . . . and I did get the tap out - but had to use a heli-coil because the threads were so boogered up.
