CHAPTER X 

 GLAZING AND SCREENING 



94. Definition. Glazing consists of cutting and setting 

 glass in frames. The chief use of this art is in cutting, tack- 

 ing and puttying panes of glass in window sash, hot-bed 

 frames, etc. 



95. Precautions. Window glass may be secured in 

 single- or double-strength thicknesses. Double-strength 

 glass is thicker and stronger than single-strength. Glass also 

 is manufactured in a variety of qualities. That known as 

 common is used for ordinary purposes. Whatever the 

 strength or quality, sheet glass should be handled with care, 

 both to prevent breaking it and to provide against being cut 

 by it. It should be grasped by thumb and fingers of both 

 hands, each taking hold of one of opposite edges. When 

 working upon a pane of glass, it should be laid flat on a plain 

 wood surface, such as the top of a bench or table. 



96. Cutting Glass. Clean off a flat wooden surface and 

 lay the glass on it, preferably by sliding the glass upon the sur- 

 face rather than placing it upon the surface from above. If 

 an irregular piece of glass is to be used, place a straight-edge, 

 preferably of wood, but the edge of a carpenter's square may 

 be used, near one edge and run a glass cutter across the glass 

 and against the edge of the straight-edge with one firm stroke, 

 using moderate pressure. If the glass cutter is sharp and the 

 single operation is done carefully, a cut will appear at all 

 points on the glass where the cutter has run. Slide the glass 



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