Making some poppers with a cupped mouth and I am looking for a round rasp bit 1 inch in diameter??? Is there any such animal???

Have tried Beaver Woodworking, Home Depot, my Woodcraft catalogue.......the only size I found was approximately 1/2 inch and it is a real labor to get the exact "cup" that I am looking for (not to mention a little dangerous if I am not careful!
PS-I did the search thing already.
