an ongoing project if mine is to make bumping dies. i have annealed and bored out to .625 several conventional dies. i'm going to loctite or epoxy in .625 steel to drill and ream for the various sizes that i want to make. the question that i have is . is 12L14 ok to use? i also have 1144 which i think is tougher. i8 choose these because of the quality of the finish. i'm just a home hack machinist. comments please.