Lemoyne,..I have doing the drill bit "bit"for a good while now.I just slightly spin the bit between my fingers and this sort of chews away the carbon build up.Do know a fellow that got real lazy and chucked it in a drill,yeah,he bought a new plug,the idiot.I also use the hat pin thingy as well.Not sure where I picked this tip up,shoot,it may have been from you.Thanks for your interest and advice. hunt4me