How to choose the correct saw

Whilst there are many types of saws available the general DIYer needs really to have only two in their tool box. One for fine work such as picture frame making and another for less precise work on rough sawn timbers such as that used in a stud wall.

Tennon or Back Saw

Tenon SawA Tennon or Back saw is used for fine detail work such as picture frame making or cuttting door architrave or dado rails. It is known as a back saw as it has stiffened back that gives greater control. The number of teeth per inch is high and the teeth fine to leave a clean cut.
 

Panel or Rough Saw

Panel saws are used where precision is not as critical such as cutting wood for a stud wall frame that never be seen. The blade is longer to accomodate a vigorous cut, the teeth deeper and fewer per inch and the blade has no "back" meaning is can cut through larger picese such as joists or ply sheet. All this to amke the cutting faster.

Most panel saw handles have a 90 degree angle to the top of the blade for marking cuts.

Most saws today are seen as a throw away item as they are cheap enough to replace when blunt when compared to the cost of sharpening.