Solder paste is a third hand

Because solder must be applied concurrently with heat, process flexibility is limited when flux-core wire is used for soldering-more than two hands are often needed.

Paste-like Solderplus from EFD International, offers alternatives to single point soldering. Each metal particle of the paste is coated with flux, instead of an internal core of flux, enabling the material to act as a convenient `third hand’ to hold wires in position for reflow. It can be applied manually or automatically.