Double height pylon for Brio wooden train

My grandson likes to stack up his Brio train levels but doing so with blocks is unstable. I have designed this one piece double height pylon on a footing for greater stability. His little hands were struggling to fit wooden rails to the original tops so I have provided greater clearance yet still avoiding the tracks from just falling out. Designed in Sketchup Make and printed on a homebuilt i3 clone printer.

I have also added files for a single height pylon with footer and topping and se