I needed this crossover for my switching layout--no one makes it so my Ender 3 and I did. This thing is big! About 18" long, I printed the base in 4 pieces to get it on the build plate. I could have done it in 3, but the junctions would have been in awkward places. It still took about 22 hours to print. I needed to sacrifice about 22" of Gargraves flex track. The center crossing power rail is 14ga wire flattened and soldered. All of the legs are in the same power block, so all rails are tied together.
The real point is that with this idea, which should be adaptable to any angle you need, layout requirements and not part availability get to determine where the tracks can go.
