I completed the last piece, which I've named the Channel Plate, as it contains the two ring-shaped channels; the outer ring channel connects the water input side of all 9 pistons, while the inner ring channel connects all 9 piston outputs. The channels are isolated from each other, and the outside world, by 3 O-rings.
Input & output connecters are shown in the photo below. I needed to counter-sink the socket head screws to avoid interfering with both connecters.
I still have a few more small machining tasks to accomplish, such as cut an O-ring channel inside the tubular housing which will seal the oil pool around the piston block, and install a plug in the valve plate. Then, finally, I can assemble all the pieces and begin testing my little toy.
![Channel Plate Inside sml.jpg Channel Plate Inside sml.jpg](https://cdn.imagearchive.com/homemodelenginemachinist/data/attach/111/111749-Channel-Plate-Inside-sml.jpg)
Input & output connecters are shown in the photo below. I needed to counter-sink the socket head screws to avoid interfering with both connecters.
![Channel Plate Outside sml.jpg Channel Plate Outside sml.jpg](https://cdn.imagearchive.com/homemodelenginemachinist/data/attach/111/111750-Channel-Plate-Outside-sml.jpg)
I still have a few more small machining tasks to accomplish, such as cut an O-ring channel inside the tubular housing which will seal the oil pool around the piston block, and install a plug in the valve plate. Then, finally, I can assemble all the pieces and begin testing my little toy.