1. Wire connections must be made mechanically sound before they are soldered.
2. Solder alone does not provide sufficient strength to prevent breakage.
3. Joining surfaces of connections to be soldered must be clean and bright.
4. If a separate flux is used, it should conform to Military Specification MIL-F-4995,
Type I, rosinalcohol flux, and should be brushed onto the joint before soldering.
5. If a flux-core solder is used, it should always be rosincore electrical solder.
6. If an uncored solder is used, it should be a leadtin solder conforming to Federal
7. Wires should always be heated to the point at which the solder will melt
completely and flow into all parts of the joint.
8. Excessive build-up of solder `gobs" on the joint should be avoided or removed.