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Lumber01:19

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Lumber is derived from logs which are harvested, debarked, and processed into long pieces with a rectangular cross-section. The transformation of logs into lumber involves multiple steps, beginning with an automated saw that slices the log into slabs. These slabs are then transported via a conveyor belt to smaller saws, where they are cut into square-edged pieces of specific widths.
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Wood Surfacing01:14

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Wood surfacing is a critical finishing process designed to smoothen the wood surface, enhance its dimensional accuracy, and make handling safer. This process compensates for potential shrinkage during the seasoning phase by marginally increasing the wood dimensions before surfacing. It also helps correct some distortions that may occur as the wood dries.
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Wood, derived from trees, is a versatile and widely used construction material. Trees feature a trunk surrounded by a protective layer of dead bark. Beneath this outer layer lies the living bark, followed by the cambium, and then the sapwood which transitions into heartwood as it matures. At the center of the trunk is the pith. The age of a tree can be discerned by examining its growth rings, which are concentric bands visible in the trunk's cross-section.
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Softwoods and hardwoods, derived from different types of trees, are distinguished by their leaf structures and cellular compositions, each serving unique purposes in construction and manufacturing. Softwoods come from cone-bearing trees with needle-like leaves and are predominantly composed of longitudinal cells called tracheids and a smaller proportion of radial cells known as rays. Due to their cellular structure, softwoods are commonly used in construction for structural frames, sheathing,...
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Wood's structural properties derive from fibers aligned along the tree's length, contributing significantly to its mechanical strength. Wood exhibits up to twenty times greater tensile strength along these fibers compared to across them, and generally shows better performance under compression than tension. The length of fibers varies, with hardwoods having fibers around one twenty-fifth inch long and softwoods ranging from one-eighth to one-third inch.
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Could woodworking have driven lithic tool selection?

Rebecca Biermann Gürbüz1, Stephen J Lycett1

  • 1Department of Anthropology, Ellicott Complex, 380 Academic Center, University at Buffalo, SUNY, Buffalo, NY 14261, USA.

Journal of Human Evolution
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PubMed
Summary
This summary is machine-generated.

Early hominins may have used larger stone flakes for woodworking. Experiments show larger flakes are more efficient for this task, suggesting woodworking influenced early tool design.

Keywords:
Behavioral adaptationHominin behavioral ecologyPaleolithicStone tool functionWoodworking

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Area of Science:

  • Paleolithic archaeology
  • Early hominin behavior
  • Lithic technology

Background:

  • Understanding early stone tool function is key to hominin behavioral evolution.
  • The oldest flake tools date to 3.3 million years ago, potentially marking a significant evolutionary step.
  • While meat acquisition has been the primary focus, evidence for early woodworking is emerging.

Purpose of the Study:

  • To investigate the relationship between early stone flake size and woodworking efficiency.
  • To determine if woodworking could have influenced the selection and production of early stone tools.

Main Methods:

  • An experiment was conducted comparing the woodworking efficiency of small and large unretouched flakes.
  • Participants used either small or large flakes to remove a standardized area of wood.
  • Efficiency was measured by the time taken to complete the task.

Main Results:

  • Participants using larger flakes were significantly more efficient in the woodworking task.
  • This suggests larger flakes could have been preferentially selected for woodworking by early hominins.
  • The findings align with previous experimental data on non-woodworking tasks.

Conclusions:

  • Woodworking may have driven the selection for larger flake tools in early hominins.
  • The production of large flakes, like those found at Lomekwi, could be linked to woodworking, in addition to or instead of butchery.
  • This could have also influenced later tool-making strategies, such as Levallois techniques.