Wiring up projects is much easier with stranded wire than solid. But there is a drawback when making connections with screw terminals. The strands tend to splay out giving rise to possible shorts. An answer to this problem is the use of wiring ferrules. A ferrule is a thin tube that the stranded wire is inserted into. The ferrule is the crimped to secure the wire and make a solid electrical connection. I have also tinned and soldered the wires in the ferrule. The ferrule is seated in the screw connector and the clamping screw tightened, making a secure connection. They are available to accommodate different wire gauges and strip lengths and with or without insulating bushings. They are available from McMaster Carr and major electronic supply houses.