Summary

This is a bracket that you can mount a servo controller to. The controller lets you control the swing of a SG90 servo in both directions. The servo mounts under a turnout on your layout. A much more complete description here ......

http://1fatgmc.com/RailRoad/Servo%20Control/page-8.html

..... and here .......

http://1fatgmc.com/RailRoad/Servo%20Control/Servo%20Control-Index.html

.... and a video here ......

https://www.youtube.com/watch?v=_fnYJ44xLyI&feature=youtu.be

You can find the files to print the SG90 servo bracket that locates the servo on the bottom of the layout under the turnout here ....

https://www.thingiverse.com/thing:4515776

Prints were printed with an Ender 3 Pro using Cura set on 'Standard Quality' in the 'Profile' setting and with a stock .4 nozzle.

More on other items for your layout here ....

http://1fatgmc.com/RailRoad/3D-Printer/3D-Printer-Index.html