Making Screws Hold In The End Grain Of Wood
MAKING SCREWS HOLD IN END GRAIN
It is often necessary to fasten one piece of wood to the end of another by means of screws. Wood being a fibrous material, it can be readily understood that when a screw having sharp threads is put in the end grain parallel to these fibers the threads cut them in such a way that, when an extra strain is put upon the parts, the screw pulls out, bringing with it the severed fibers. The accompanying sketch shows how this difficulty may be overcome, and at the same time make the screw hold firmly. A hole is bored and a dowel, preferably of hardwood, glued in it, the grain at right angles to that of the piece.
The size of the dowel, and its location, can be determined by the diameter and the length of the screw. The dowel need not extend all the way through the piece, but should be put in from the surface where the grain of the dowel will be least objectionable.
When putting screws in hard wood much labor will be saved by applying soap to the threads.
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