Saw blade and method of shaping a back edge of a saw blade

A saw blade comprising a first edge having teeth and a second edge opposed to the first edge, which second edge extends in a first principal direction of extension along a first part and in a second principal direction of extension along a second part,

• neither said first nor said second principal direction of extension being parallel to a principal direction of extension of said first edge, but said first principal direction of extension forming a first and positive angle (A) with said principal direction of extension of said first edge and said second principal direction of extension forming a second and negative angle (B) with said principal direction of extension of said first edge, said first angle having a magnitude greater than a magnitude of said second angle,
• wherein said second edge extends parallel to said first edge along a third part, said third part connecting said first part with said second part and said second part being longer than said first part in the principal direction of extension of the saw blades,
• wherein said second edge extends in said first principal direction of extension along a fourth part and said second edge extends parallel to said first edge along a fifth part, said fifth part connecting said second part with said fourth part, and wherein said third part and said fifth part each have a length in the principal direction at least twice as long as a pitch of the teeth,
• wherein said third part and said fifth part are shorter than said second part in the principal direction,
• wherein said third part and said fifth part have a length in the principal direction at least twice as long as a pitch of the teeth.