Man with scarred right hand say: Never operate angle grinder with a fresh wheel on it and the guard removed. Right about 14,000 rpms it blew apart.
No digits removed or broken amazingly. Lots of gore however. Couldn't feel a thing. Docs in the ER said we can't sew up what ain't there anymore. Think 1/4" wide spoon gouge making a few passes across the tops of your fingers... Look at the pretty white bones honey...I think I'm gonna pass out.

Thank god for modern chemisty is all I can say.