Time for some brass work now. I have a horizontal mill so thinking about the setup to do the connecting rods took a while. Since there are 2, I mostly worked on them together, using the 2 holes to keep the pieces aligned. Drill rod is your friend for this :-)
In the process I learned also that I need better clamps for my rotary table, yet-another-tool-to-make added to the list. Laying out the outline was a bit fiddly, a sharp scriber is very necessary to keep the layout blue from chipping.
The pieces were finished off on my ancient scroll saw that converts to a die filer.
Milled slots in the pistons and drilled for wrist pins, then assembled.