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In woodworking, hewing is the process of converting a log from its rounded natural form into lumber (timber) with more or less flat surfaces using primarily an axe. It is an ancient method, and before the advent the sawmills, it was a standard way of squaring up wooden beams for timber framing.
A sawmill (saw mill, saw-mill) or lumber mill is a facility where logs are cut into lumber. Modern sawmills use a motorized saw to cut logs lengthwise to make long pieces, and crosswise to length depending on standard or custom sizes (dimensional lumber). The "portable" sawmill is simple to operate. The log lies flat on a steel bed, and the ...
In the 1870s, the limitation of log size due to the radius of the circular saw was improved with the introduction of the double circular saw- with one blade atop the other. In the 1880s, the band saw was introduced and was able to allow the head saw to handle logs of nearly unlimited size, ideal for the Californian redwoods .
A method for logs 16–19 in (41–48 cm) A method for logs over 19 in (48 cm) Quarter sawing or quartersawing is a woodworking process that produces quarter-sawn or quarter-cut boards in the rip cutting of logs into lumber. The resulting lumber can also be called radially-sawn or simply quartered.
The term sawlog is a log of suitable size for sawing into lumber, processed at a sawmill. [1] This is in contrast to those other parts of the stem that are designated pulpwood . Sawlogs will be greater in diameter, straighter and have a lower knot frequency.
Workers load blocks of lumber into the flume. To load the flume, sawmill workers trimmed logs into planks and clamped them into blocks. The blocks were then linked together to form trains. It took 15 hours for a train to reach the railhead at Sanger, a speed of commercial lumber transport that was unmatched at that time.
A sawmill with log flume, Cascade Range, USA. A log flume or lumber flume is a watertight flume constructed to transport lumber and logs down mountainous terrain using flowing water. Flumes replaced horse- or oxen-drawn carriages on dangerous mountain trails in the late 19th century.
The men working at the end of the boom would sort the logs according to their corresponding brand and float them into the correct holding pond along the bank of the river. During the height of the lumber industry in Lycoming County, 1861–91, the various mills produced 5.5 billion board feet (13 million m³) of lumber.
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