Foster, Edwin W · Boston : Ginn and Company · leaf 69
Fig. 73. Log cut lengthwise, showinghow Grain is formed 60 ELEMENTARY WOODWORKINCx … Fig. 74. Showing WeatherChecks and Shake Looking at the length of the log we see that the lines in a board, which we call the grain, are really the edges of the annual rings. It often happens in the forestthat the wind sways the treesto such an extent that the an-nual rings separate and slide…
Woodwork · Trees
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