The creation of a joint using a filler (welding rod) of similar composition to the metal being joined, using electricity to generate an arc.

This is a new document explaining the need for controlling the fumes generated by welding steel.

It gives some solutions to managing the problem of extraction.

This document gives guidance to teachers and technicians that will be supervising a welding or plasma cutting facility.

Guidance on controlling the fumes from these operations can be found in GL326

Thermoplastic materials are joined using a jet of hot air to melt and fuse the plastics material. A filler rod of the same material may be used to reinforce the joint.