Twin Cylinder Steam Engine


 This is another PM Research casting kit. It is cast from bronze and cast iron. Needless to say, it is rather heavy. The kit is shown without all the documentation. This is one of their pricier kits and requires a good deal of work to complete. There are a couple of omissions from the measurements in the blueprint requiring a bit of calculation, but not too bad. The base had some unexpected hard spots that ruined a couple of HSS end mills. They exchanged it for me and the new one was much better although not entirely without a few spots of its own.


 The finished product was finished with Emerald powder coating to match the display on PM Research's site. I was impressed with its appearance. Having the two cylinders set at 90 degrees apart, it always self-starts.