activator rail
thingiverse
A Minecraft activator rail is a redstone component that, when powered, triggers any nearby mechanism such as doors, trapdoors, or pistons. This useful tool can be used to create automatic systems in your Minecraft world, adding convenience and efficiency to your gameplay. Simply place the activator rail and connect it to a power source, then watch as your creations come to life with just a flick of a switch!
Download Model from thingiverse
With this file you will be able to print activator rail with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on activator rail.