I remixed this to print with a solid base as the kids never attach blocks to the bottom anyway. It makes it a nicer print with less supports and similar amount of filament as 15% infill vs 10% supports makes no difference.
I also remixed a mirrored version incase you want the switch on the other side. You can't just mirror the standard part else you will mirror the connectors. Just remember to print the mechanism mirrored also.
CURA says it is 66g for the main part and takes 6 hours and 19 minutes to print, but it takes longer and is probably slightly heavier.
I'd love to see someone create a straight track with a switch! It is beyond my skills at the moment.
Grey and Gold