62 



ELEMENTARY WOODWORKING 



A better way would be to build the board up of sev- 

 eral narrow strips glued together, as the warping of one 

 would be counteracted by the warping of its neighbors 

 in opposite directions ; but to make doubly sure, cleats 

 fastened with tongue and groove joint should be added 

 at the ends, as shown at D. This has an advantage 

 over the first method, as the cleats in are often in 

 the way and make the board clumsy to handle. 



FIG. 77. A Study in Construction. Methods of overcoming 

 Warping and Shrinkage 



The student will find many evidences about the house 

 of how the woodworker has tried to prevent warping 

 and shrinkage, as, for instance, in the paneled doors, 

 tables, etc. 



The wood of the various trees differs greatly in hard- 

 ness, evenness of grain, durability, etc., and every boy 



