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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1919 Excerpt: ...for making them singly. The extra cost of wide lumber must always be taken into consideration when planning on converting it into narrow moldings. There is certainly no satisfaction in making an imposing display of higher molder efficiency by running molding in gangs if, after the job is completed and properly figured, it is found that the finished moldings are worth less than the market price of the wide lumber from which they were made. Manufacturers of wholesale softwood molding, picture frame and embossed molding, run most of their narrow patterns in multiples of two or more. There is this difference in the established methods of making the different classes of moldings. In planing mills where large quantities of woodwork for building purposes are manufactured, multiple work is generally run face down, while in furniture and picture frame factories almost everything is made face up. Any ordinary pattern of molding can usually be run successfully either way altho there are some practical advantages in the face-down system under certain conditions, as mentioned in Chapter VII. The best way to run any multiple molding depends largely upon the profile of the molding and the manner in which it is most practical to separate the multiples. For instance, if the hack of the molding is flat, it can he run face down very satisfactory Fig. 46. Examples of moldings made in pairs, face down. by surfacing the back with the top head, the square edges with the side heads, and finally molding and splitting it, as required, with the bottom head, see examples in Fig. 46. When this method is followed no wide stock is separated into narrow pieces by the top head, hence there are no narrow strips to twist, break, buckle nor get out of line in the machine. Here is another poin...
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