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Chapter 22 



flooring blocks are usually square edged; prefinished blocks may be square- 

 edged but are commonly tongued or grooved on all four edges. 



running match 



balance match 



Figure 22-48. — Four patterns obtainable by matching veneers. (Drawing after Hard- 

 wood Plywood Manufacturers' Association.) 



Stock panels. — Stock panels are manufactured in many combinations of 

 length, width, and thickness. The common panel sizes, however, are 48 by 48 

 inches, 48 by 96 inches, and 48 by 120 inches; thicknesses range from ^/s-inch to 

 1-3/16 inches. For architectural woodwork, y4-inch-thick panels predominate 

 because edges may be splined, shiplapped, or otherwise readily fastened. Stock 

 panels are made with four different core constructions, as follows: 



Core construction Usual panel thickness 



Inches 



Lumber '/2 to 1 -'/4 



Veneer '/s to y4 



Particleboard '/4 to 1-3/16 



Medium-density fiberboard VaXo Va 



