INDUSTRIAL ART 



298(i 



INDUSTRIAL ART 



and shapes, and are worthy to be decoratively 

 painted in bright colors. There are many uses 

 for such boxes. The circular raarshmallow 

 box, made of tin, is especially well adapted to 

 the development of our last problem in this 

 series. 



In carrying out the idea of structural de r 

 sign it will be necessary for us to plan a de- 

 sign for a circular space. There are various 

 ways of doing this. Let us again resort to the 

 device of paper cutting. First, draw with com- 

 passes a circle about four inches in diameter; 

 this is probably a little smaller than the top 



Fig. 59 



Flat file_ 



-Collar button 



rTg.63 



Fig. 61 



Fig.62 



fig. 64 



Lighted candle'* 



Fig.66 



of the box. Fold it on a vertical and a hori- 

 zontal diameter (Fig. 56). Upon the folded 

 quadrant sketch a simple shape or two half 

 shapes, as shown in Fig. 57. Cut out the 

 shape or shapes, and the result will be some- 

 thing like Fig. 58. Such a design is structural, 

 because it is based on the lines of the con- 

 struction of the form which encloses it 



Another method of planning a design for a 

 circular shape is shown in Figs. 59 to 62. 

 Here two four-inch circles are drawn; by set- 

 ting off the length of the radius each circum- 

 ference is divided into six equal parts. Three 

 diameters are ruled on each circle, connecting 

 the opposite points of division on the circum- 

 ferences. A segment is then cut from one of 

 the circles (Fig. 60) and folded on its axis 



(Fig. 61). A half shape is drawn upon the 

 folded segment, and cut out. The result is 

 a balanced unit of design. This* unit is placed 

 on each of the segments of the circle which 

 remains uncut. The repetition about a center 

 which is seen in this design is known as radia- 

 tion, because the different parts of the design 

 seem to radiate from a common center like 

 the spokes of a wheel or the petals of a daisy. 

 Radiation is sometimes mentioned as a princi- 

 ple of design. 



Before the circular design is placed upon 

 the top of the marshmallow box, there is an- 

 other interesting operation to perform. Our 

 gift box should be provided with a handle. A 

 discarded brass collar button exactly suits our 

 purpose. The center of the upper side of the 

 cover must be scraped with a knife to make 

 it rough. The small end of the collar button 

 must be filed for the same purpose (Fig. 63). 

 There is a certain kind of solder called solder 

 paste which must now be used, for ordinary 

 solder will not answer. Solder paste is put 

 up in tubes, like library paste or dental cream, 

 and can be squeezed in small quantities from 

 the tube. Apply a little of this solder paste to 

 the center of the cover, also to the small end 

 of the collar button. Place the small end of 

 the collar button exactly in the center of the 

 upper surface of the cover, and hold it in 

 place over a lighted candle or match, as shown 

 in Fig. 65. As soon as the paste bubbles from 

 the heat, fusion of the metals has taken place, 

 and the flame may be extinguished. 



Your box may now be painted black, dark 

 blue or green, with enamel paints or japalac. 

 This coat must dry over night. Then the de- 

 sign which you cut from the circular piece of 

 paper may be fitted on the top and traced. 

 A simple border rhythm must be planned for 

 the sides. This is best done by cutting a strip 

 of paper as wide as the height of the box and 

 long enough to reach around it. In Fig. 66 

 the unit cut for the top (Fig. 62) was spaced 

 for the decoration of the sides. The b( 

 rhythm should be spaced and drawn on the 

 strip of paper, and each unit cut out. The 

 strip thus becomes a stencil, by means of which 

 the decoration can be placed on the sides of 

 the box. The color scheme of the box illus-- 

 trated in Fig. 66 may be dark blue, white and 

 orange. Any design and any harmonious color 

 scheme can be used. 



In carrying out the problems which require 

 the use of enamel paints, you will need black, 

 white, yellow, ultramarine blue, light greeu, 



