Get this 6-pack of Smail(TM) terminal blocks (Part # 800-6306) from Circuitron. These terminal blocks are suitable for all scales. They come in 9 sets of two screw-type blocks that can be easily soldered to the Smail circuit board, enabling effortless under-layout connections.

Using these terminal blocks is easy. First, make sure your Smail circuit board is clean and dry. Then, solder the two screw-type terminal blocks from each set to the appropriate spots on the board. This will allow you to make under-layout connections without any hassle. When soldering, be careful not to overheat the components as it may damage them. For maintenance, keep the terminal blocks clean and free from dust. Check the solder joints periodically to ensure they are still secure. If you notice any loose connections, simply re-solder them. With proper use and care, these terminal blocks will serve you well for a long time.