yup, got a bit careless and paid for it. grinding down a flat piece of steel with my 12 inch disc sander with 40 grit paper. sander grabbed the steel and it flipped down into the opening between the disc and table. my right thumb went in between the disc and the flat steel. took about a 1/2 inch off my right thumb tip in the blink of an eye. since it got bone too i see some surgery in my future. pisses me off i won't be able to shoot pistol for awhile. i think i can still shoot my ar though. be safe out there! this is a public service message brought to you by a dumbass!