I was digging through old posts earlier today and found this photo, which helps me plan out exactly what has to happen to get the cabinets in place.
I’m glad I take boring pictures of things in progress, because this shows how the pipes were installed and what I’ll need to do to move the right side drain further to the right to clear the edge of the cabinet. I was thinking they were angled slightly upwards but they appear to be a pretty simple 90˚ bend, so all I’ll have to do is carefully cut a bit of the wall to either side of the final bend, cut the pipe, and add an extension. While I’m doing that I’m going to add doglegs to the supply pipes on both sides so that they come up correctly in the back of the cabinets.
I’m on the fence as to whether I’m going to extend the left side as well. Technically the pipe clears the edge of the cabinet, but it would be nice to have it centered. I guess we’ll see how hard it is to move the right side first. The biggest issue will be cutting through that diagonal sheathing in the picture; it’s 100-year-old true 1″ wood, and it’s hard as a rock. Oscillating saw to the rescue!