Temperature Rise and Moisture Movement in Wood Cutting

In sawing wood the friction due to the cutting process generates heat and, in extreme cases, burning and overheating of the cutter are evident. This process also involves the drying out of the wood in the vicinity of the cut, with migration of the moisture away from this zone. The phenomenon was observed in sawing ash eucalypt at 12.4 percent moisture content with a rather blunt bandsaw. Direction of cut was parallel to the grain. Cutting dries the wood, as well as raising its temperature, thus reducing its heat conductivity. This leads to an unstable condition and possible burning of the saw or rotary cutter.

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