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In addition to the grain, quartersawn wood (particularly oak) will also often display a pattern of medullary rays, seen as subtle wavy ribbon-like patterns across the straight grain. [6] Medullary rays grow in a radial fashion in the living tree, so while flat-sawing would cut across the rays, quarter-sawing puts them on the face of the board.
Instant tree shaping [3] [2] [15] is a widely used method. [3] It uses mature trees, perhaps 6–12 ft. (2–3.5 m) long [5] [4]: 196 and 3-4in (7.6–10 cm) in trunk diameter. [5] [4]: 172 An instantaneous form is created by bending, weaving and sometimes cutting or marking the trees into the desired shape. Then the shaping is held in place ...
Clearcutting, clearfelling or clearcut logging is a forestry/logging practice in which most or all trees in an area are uniformly cut down. Along with shelterwood and seed tree harvests , it is used by foresters to create certain types of forest ecosystems and to promote select species [ 1 ] that require an abundance of sunlight or grow in ...
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Cut-to-length logging (CTL) is a mechanized harvesting system in which trees are delimbed and cut to length directly at the stump. [1] CTL is typically a two-man, two-machine operation with a harvester felling, delimbing, and bucking trees and a forwarder transporting the logs from the felling to a landing area close to a road accessible by ...
The undercut or notch cut is the guiding or aiming slot for the tree and is a V-shaped notch placed on the side of the tree in the direction of intended fall. [4]The back cut or felling cut is made on the opposite side of the tree of the undercut and is cut through the base of the tree severing the “hinge” holding the tree up.
An opening ceremony, grand opening, or ribbon-cutting ceremony marks the official opening of a newly constructed location or the start of an event. [1] Opening ceremonies at significant events such as the Olympic Games , FIFA World Cup , and the Rugby World Cup might involve thousands of participants and be watched worldwide.
The remaining part of the tree's diameter is for the back cut, which weakens the tree structurally enough for it to fall without splintering and other unwanted effects. There are three types of directional felling notches that are most commonly used in the logging and arboriculture industries by chainsaw operators.