With the left-side of the saddle made, it then gets copied over to the right side. There’s a bit of tweaking involved since the cylinder has a 1 degree tilt, so both sides are not complete “mirror” of each other. Like everything so far in this project, that would make it too easy!
As shown above, the saddles are bolted together at the centerline, completing the “cradle” that will receive the boiler later. The saddles are bolted to the frames just inboard of the cylinder. They can be seen in the see-through section below, along with the piping in the casting.
Here’s comparing the layout to Lingenfleter’s: