Thread: Gess what I`m doing.

Hi all, yep have set up one of the 4140 steel shafts in my lathe ready to drill a .444" hole in for 28". Now running two oil pumps for more volume and pressure and mixed in 5ltrs of Coolcut cutting oil to my hydraulic oil, should help keep the drill sharp and cool. And speaking of sharp I worked out a way to sharpen my gun drills on my lathe with a small diamond grind wheel, used to cost me $50 each to get them sharpened, can't beat do it your self. IF it comes out any good still thinking what rifling twist should I do, 1-18" or 1-20" with a 27" barrel. . Pic`s of the setup.
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, All ready to go.