Several of the best-known types of manufactured posts are shown in Figure 92.

Fig. 92.—Types of Binding-Posts.

Figure 93 shows different ways of making simple binding-posts and connectors from screws, washers, screw-eyes, and strips of metal. The drawings are self-explanatory and should need no comment.

Fig. 93.—Home-made Binding-Posts.

The screws and nuts obtainable from old dry cells are very convenient to use for binding-posts and other similar purposes.

Switches and Cut-Outs

Switches and cut-outs are used in electrical work for turning the current on and off.

If the experimenter chooses to make them himself, care should be taken, to construct them in a strong and durable fashion, for they usually are subjected to considerable use, with consequent wear and tear.