- 



PATTERN MAKING 



side cd, the curve will be reversed for the: same reason. Whenever 

 it is necessary to cross the grain of thin i>i -t-s for a ]><ilt<-i-n, 

 three or more pieces should be used, which will give satisfactory 

 results if placed together as shown in Fig. 0. 



7597 



Fig. 6. 



When thin circular disks of 

 large size are to le glued up for 

 patterns of any kind, the strongest, 

 stiffest, and most satisfactory re- 

 sults will be obtained if the pieces 

 Fig- 5. are fitted and glued tangentially 



to the hub or other center or opening in the disk, as shown in Fig. 1. 



The grain of the wood must run lengthwise, and parallel to the 



longest side of each sector; and, after the pieces have been fitted 



together, a thin groove is cut in the edge of each, in which thin 



tongues of wood are 



inserted and glued, as 



illustrated in Fig. 8. 



Two disks are glued up, 



and one is turned over 



so as to reverse the grain 



of the sectors of one 



disk on that of the other, 



as shown by the dotted 



lines. The disks are then 



glued together, making 



a very rigid construe- Fig. 1. Fig. 8. 



tion, and one which, owing to the continual change in the direction 



of the grain, will not warp. 



Should a wide and thin piece of a single thickness be required 



for a pattern, the board from which it is to be made should be 



ripped into strips of two, three, or four inches in width (according 



to the width of the required board), and the strips glued together 



