Would it be possible for you fellas with lots of wisdom in this area to share it and get a bank of info? This is the area I struggle with because I use alot of old military metal and some of the grain in that stuff is interesting along with the tap and drill paks I bought from ole grinning Larry at midway had the wrong drill bits in the paks! I found this out after I measured bits after some serious screwups (Larry's grin didn't help my feelings). I enjoy the stickies here on everything thats in them and would desire help in this area! Thanks and if this was done before please direct me to the info!