• Basically a saw drags a number of cutting teeth through work to cut a thin slot. When done, two major piece can be separated.
• The basic saw blade look like,
• Saw types,
Circular saws - use round blades rotated at high speeds.
Band saw - a band is in one continuous loop-, like a ribbon.
Hack saw - a small blade much like a steel ruler. This is moved back and forth (it reciprocates) to provide the cutting action.
• Saw operations include,
Cutoff - one smaller piece of stock is cut from a larger one.
Contouring - a bandsaw is used to cut a non-straight path in an object, often this step precedes other machining operations, such as drilling.
Stack Cutting - multiple pieces are cut at the same time.
Shaping - Chunks are cut out of a larger piece.
Angular Cuts - such as cutting a side hole in a pipe.
Internal Cuts - the entire hole is enclosed in the material.
Ripping - Long cuts to separate parts into halves.