By the mid 1970's, I had acquired a bench mill and then a floor model mill and my next engine was to be my first corliss engine. I used the Cole's castings and modified the design to resemble details on corliss engines that I had seen. I did keep the Philadelphia releasing gear. The Cole's corliss was designed by Paul Briesch in Pennsylvania. The design and patterns were sold to Charlie Cole and the rest is history. A project like this just has to be taken one piece at a time. The engine runs very well on air, with the releasing gear operating perfectly. This would not be the last corliss that I build, however. [ Guests cannot view attachments ] [ Guests cannot view attachments ]