Soldering terminology

Error pattern in which solder threads form on solder cones or wire ends (see figure). This often occurs when not enough solder is used or the diameter of the contact hole and the pin do not match. If the gap between the two is too small, the solder is allowed to flow out of the hole and form threads. When soldering by hand, the soldering iron often does not supply sufficient heat. In this case, a more powerful device or a tip with a larger contact surface must be used. It is recommended to remove the threads first by mechanical means before repairs are attempted. Especially in wave soldering, icicle formation may be the consequence of thermal equilibrium, solderability or bad circuit design.