34 ELEMENTARY WOODWORKING 
Patent spiral screw-drivers have come into use in 
recent years, but where considerable force is required 
the brace and screw-driver bit are more effective. 
Fic. 46. Cutting a Mortise 
21. Sandpaper. “Sandpaper is the last resort of a 
poor workman.” This statement has been made by 
many teachers to many thousands of students, and is 
