Here is a picture of the original switch located in Snaefell on the Isle of Man.
Unlike my previous two switches, I decided to build this one in situ as its geometry is critical.
I decided to extend the ties from the new track all the way to the existing main line so that when I rebuild the grade crossing, the entire thing will be supported and will move as a single piece.
The outer rails of the wye are temporary in place to check the geometry.
At that point, one of the inner rail still needs to be cut. Keeping it long made it easy to check the alignement.
The blade is in place! It is made of a flat steel strap used by carpenters for connecting beams together. There is a steel tip welded at the end to act as a thin point (while a rail could be filed down to the right shape, the aluminum would not be very robust). The pivot is made of a half inch diameter steel rod welded to the bottom of the plate and resting into an oversize tie.
This picture and the next show the two positions of the blade. It does not close completely yet: the base plate needs to be ground some more.
The rail is held in place by a "few" screws...
The two diverging rails are held in place by screws holding them to a steel strap bent at a right angle and attached to the oversize tie.
The two grey plastic strips seen across the tracks have grooves machined in them to keep the rails in gauge.