A fret saw is a tool that is similar to a coping saw but with a much deeper frame. A fret saw, like a coping saw, has a very fine (up to 32 teeth per inch), thin blade, which is kept under tension so that it cannot bend. The greater depth of the frame, however, allows the fret saw to work on larger pieces of wood. It is used mainly for cutting out intricate shapes and patterns. The blade is thin so is capable of turning very sharply which gives it such flexibility. It is perfect for cutting out shapes, such as those animals, in ply wood.
A fret saw can be used on both wood and metal (using special blades). It is a handheld version of a scroll saw.
Framing hammers have increasingly been replaced by nail guns.