Assembling
There are many different joining methods for fixing metal in place. Non-permanent methods include nuts and bolts, screws and A metal plug used to hold sheet material together. They expand when the central plug is pulled upwards through the body of the rivet.. Whilst many would consider a rivet a permanent method of joining, it is possible to drill out an old rivet so that a new one can be used.
Permanent methods of joining metals are listed in the table below:
| Soft soldering | Used to solder printed circuit boards (PCBs) and electronic components. Plumbing application where copper pipes are joined together. |
| Brazing | Used for joining steel by melting a brass rod on the hot steel. As the brass melts, it forms a joint. Brazing is a slow and safe way to learn about joining metal with heat. |
| Gas welding/Oxyacetylene welding | Oxygen and acetylene are used to produce a flame with a temperature of over 3,000°C. A filler rod is melted so that pieces of metal can be joined together. Gas welding/Oxyacetylene welding is faster than brazing and can also be used to cut metal. |
| Arc welding | Heat is produced by a high current that is passed down the filler rod. When the filler rod melts, it fuses the pieces of metal together. Arc welding is fast and portable. |
| Soft soldering |
| Used to solder printed circuit boards (PCBs) and electronic components. Plumbing application where copper pipes are joined together. |
| Brazing |
| Used for joining steel by melting a brass rod on the hot steel. As the brass melts, it forms a joint. Brazing is a slow and safe way to learn about joining metal with heat. |
| Gas welding/Oxyacetylene welding |
| Oxygen and acetylene are used to produce a flame with a temperature of over 3,000°C. A filler rod is melted so that pieces of metal can be joined together. Gas welding/Oxyacetylene welding is faster than brazing and can also be used to cut metal. |
| Arc welding |
| Heat is produced by a high current that is passed down the filler rod. When the filler rod melts, it fuses the pieces of metal together. Arc welding is fast and portable. |
Image caption, Soft soldering electronic components
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