You might wonder why I mixed O48 and O36 on the right-hand side of the layout. I use a tight tolerance of 3/32" in my layouts, this one connects about 1/16". I could not find a perfect connection with just O36 curves, but the O48 additions changed the geometry so I could find a match.
One could also expand off the bottom left 4x8 board.
I use a lot of trial-and-error (which can be time-consuming) in assembling my layout designs. AnyRail (free for up to 50 sections of track) is easy for me to move sections around and try different configurations.
Fastrack can be cut to build custom-length sections, but its not fun, and hard to get great results. So I avoid it in my designs, which means I have to often use lots of small sections to get the right length. And do the technique mention mixing different diameter curves.
