This is to be a more elaborate production than the blotter described in Problem III (D). Compare C, Plate XIII.
First determine the size of the foundation, which may vary from small-blotter to desk-blotter size. Consider proportions very carefully. A small blotter admits greater variance between length and width than one of larger size. Make dimensioned drawings of foundation, front covering of vellum or cover paper, and back covering of marbled paper.
When the foundation has been cut and the front covering pasted on, plan the corners which are to consist of separate pieces. Determine their size by setting off a triangle at one corner with a rule or pencil, moving the rule or pencil to vary the size of the triangle until one of satisfactory size is decided upon. Lay out on paper a triangle of the chosen size. The thickness of the foundation, plus the thickness of the one or more sheets of blotting paper which are to be placed under the corners, must be taken into consideration. Before adding the laps which are to extend onto the back for half an inch or more experiment with patterns cut from paper (see Plate XV).
Plate XV. Diagram for blotter corner.
The corners may be made of linen, vellum, cover paper, or skiver (a prepared leather which has been split by machinery). Cut them out by the pattern. To give a finish to the edge which is to be free, turn it over about ¼ of an inch. If leather is used, a portion of the under side along the edges should be additionally skived off, before turning over, to make the laps very thin. Cover paper, if used, may be re-enforced by pasting a piece of muslin onto the back.
These corners present an opportunity for applied design. The most satisfactory decoration for leather is “tooling.” On the other materials suggested, a design may be applied by stenciling or block printing.[4]
[4] Simple directions for these processes may be found in the School Arts Book as follows: Tooling, June, 1908; Stenciling, June and October, 1908, March, 1912; Block-printing, June, 1907.
The designs should be simple and appropriate (see Plates XVI), and the color scheme carefully planned. Unless a special study has been made of color harmonies, a combination of analogous colors or complementary colors is a wiser choice than a more complicated combination. Practise on paper until a pattern is secured, and apply it to the corners by the method decided upon.