IMBEDDING METHODS. 



11 



means of pins and the tray filled with melted mass at one 

 pour. The pins are removed when the mass is cold. 



In either case, when the mass is cold the paper is removed 

 from it before cutting. 



To make paper trays proceed as follows. Take a piece 

 of stout paper or thin cardboard, of the shape of the 

 anne.xed figure (Fig. 1) ; thin (foreign) post-cards do very- 

 well indeed. Fold it along the lines a a and 6 //', then along 

 c c' and d df, taking cave to fold always the same way. 



A' 



Fig. 2. 



D 



Fig. 1. 



Then make the folds A A', B B' , C C, D B', still folding the 

 same way. To do this you apply A c against A a, and pinch 

 out the line A A', and so on for the remaining angles. Tfiis 

 done, you have an imperfect tray with dogs' ears at the 

 angles. To finish it, turn the dogs' ears round against the 

 ends of the box, turn down outside the projecting flaps 

 that remain, and pinch them down. A well-made post-card 

 tray will last through several imbeddings, and will generally 

 work better after having been used than when new. 



Another method of folding the paper (Mayer) is described 

 in the Grundziige, Lee and Mayek, 4th ed., p. 77. 



