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Hello Jason,That's exactly how I would tackle the water jacket if I decide to machine from solid.I used the same Woodruff cutter technique on the Mercury's propeller hub. It would be easier to handle the chip clearance on the Seal as there is a through hole and also space in the adjacent cylindersI will wait and see what Kirk delivers before I decide which way to go. I have not played 'find the part in a casting' before, It could be interesting.Mike
Jo always talks about fondling her castings. Now I know what that means, it's a process of inspecting and measuring the raw casting from all directions to decide precisely where the engine part is located within the oversize casting.