This is a critical piece unless you have a
long unused hallway. Having two is better and they are simple to build. Several track
variations can be achieved within a corner module even in this very limited
space... Alternate long and short versions of a corner are presented later in this guide.Plan
to do some track trimming to ensure clean lines and minimal gaps around the intersection.
Attach a third leg in the outside corner for stability when used as part of a floor
layout.