Bookbinding and its auxiliary branches . nd mark the hub onboth ends, then take a sharp paring knife, and cut awayfrom the mark to the spring-back. When this is done,take a coarse sandpaper, and taper the bevel until it issmooth. Beveling can be done with the machine if thehubs are allowed to set; they can be put on before theyget too dry. To strengthen the back and hubs, cut a pieceof drilling large enough to cover the back and joints,paste it, and stretch over the hubs, working it into thejoints. This strengthens the book where it is mostneeded. When dry, the book is ready for covering. Extr
Bookbinding and its auxiliary branches . nd mark the hub onboth ends, then take a sharp paring knife, and cut awayfrom the mark to the spring-back. When this is done,take a coarse sandpaper, and taper the bevel until it issmooth. Beveling can be done with the machine if thehubs are allowed to set; they can be put on before theyget too dry. To strengthen the back and hubs, cut a pieceof drilling large enough to cover the back and joints,paste it, and stretch over the hubs, working it into thejoints. This strengthens the book where it is mostneeded. When dry, the book is ready for covering. Extra Bevelkd Hubs.— Divide the length of the backinto twenty-four equal parts, and cut the board for thelower head and tail hubs four-twenty-fourths, and eight- HUBS 187 twenty-fourths for the center lower hub. Cut the boardfor the upper head and tail two-twenty-fourths, and oneand one-half twenty-fourths for the upper center hubsand four inches longer than the width of the back. Thelower hubs should not be as high as the upper hubs. The. following scale is based on No. 70 strawboard for mediumor double cap books, and may be altered to suit the occa-sion: 200-page book, 3 layers for the lower, and 4 for theupper hubs. 300-page book, 3 layers for the lower, and 4 for theupper hubs. 400-page book, 4 layers for the lower, and 5 for theupper hubs. 500-page book, 4 layers for the lower, and 5 for theupper hubs. 600-page book, 4 layers for the lower, and 5 for theupper hubs. 800-page book, 4 layers for the lower, and 6 for theupper hubs. 1,000-page book, 4 layers for the lower, and 6 for theupper hubs. 1,200-page book, 4 layers for the lower, and 7 for theupper hubs. Glue the board for the lower head and tail hubs, andplace them even with the edge of the board, while thelower center hub is placed on the center between the two,which leaves two panels four-twenty-fourths on thespring-back for titles. Glue the upper hubs, and centerthose for the head and tail on the lower hubs, while the
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbookbinding, bookyear
