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Looking really good Terry. I keep getting an itch to start machining my cylinder blocks, but I won't be able to finish them until I've re-designed the valve gear, and hence the steam ports. However, I'm not looking forward at all to drilling any holes in the boiler.How did you ensure alignment of the drill/tap? And what sort of drill, some people recommend a mag drill but they're "HOW MUCH" expensive!Have you thought about the governor yet? I'm about to machine the bevel gears for same. According to my CAD model the governor pulley and mating crankshaft pulley are 3/16" out of alignment. I'm not sure whether to start hacking bits off the governor casting, or just live with it and use a crossed belt, as apparently the pulleys are out of alignment on the full size engine. Andrew
Thanks Terry, useful to know it can be done by hand. The cheapest mag drill hire I could find was £125 for a week. I'm a slooooooow worker so I'd be looking at a monthly rate. Andrew