One ofthe best ways of putting screws into end grain is to borea hole of a size as near as can be to the size of the solidpart of the screw. The thread of the screw will thencut its way into the wood without disturbing the fiberand thus the full shearing strength of the wood will serveto hold the… … Fig. 5. sometimes necessary to take out and reinsert screws inend wood, repeatedly,—for instance, when pattern workhas to be taken apart for convenience in molding. Insuch cases, simply screwing them into the end woodshould not be depended upon, as they get loose and donot hold. A good way to…
Patternmaking
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