Ho Scale Terminal Block

thingiverse

I wanted to create a basic terminal system for powering my HO scale model railroad. There are three versions, each designed for specific purposes. For simple feeder wire use, I recommend the 3-screw variation. This setup provides a straightforward power flow: power in, feed to track, and feed out. For the end of the line or siding, the 2-screw variation is ideal. I used this version when feeding both main lines and sidings. Since screws were readily available at home, I don't know the official labeling, but they measure approximately 0.135 inch in diameter, which is roughly equivalent to an American #6 screw based on a standard size chart. The major thread length of these screws is about 0.325 inch. The nuts accompanying them are 0.305 inch wide and 0.108 inch thick. For the metal strips used in this system, I employed an aluminum sheet that was lying around. Any conductive material will work as long as it's cut to a width of just under a centimeter. To create holes for the metal strips, I used a 5/32 inch drill bit. The feeder wires are 18 gauge, and the clips are designed for 18-22 gauge red clips. The wires coming from the track are 22 gauge; however, they don't require clips. Additionally, I've included a cable support design that I use to keep things organized. It may appear large, but it's essential for managing the growing number of wires. Finally, all components can be mounted underneath tables using a Kreg 1-inch wood screw through the center hole.