Topic+3.3+Joining+methods.

=What you need to know about.=

===You need to know about the characteristics, application, processes, preparation, advantages and disadvantages of using the following temporary and permanent joining methods. You also need to be able to recognise and name them.===

**Temporary joining techniques :**

 * 1) tapping and threading
 * 2) nuts, bolts, and washers
 * 3) screws
 * 4) knock down fittings

**Permanent joining grades :**

 * 1) nails
 * 2) halving joints
 * 3) butt joint
 * 4) rebate joint
 * 5) housing joint
 * 6) mortise and tenon joint
 * 7) dowel joint
 * 8) soft soldering
 * 9) brazing
 * 10) welding
 * 11) snap rivets
 * 12) pop rivets