Chapter 8 Power Tools 223
Copyright Goodheart-Willcox Co., Inc.
2. Technology. Use a CAD drawing program to illustrate the confi guration of a carbide-
tipped saw tooth. Add text to your drawing explaining how this confi guration alters the
kerf formed by the blade.
3. Engineering. Compare a Jacobs chuck to the collet of a router. How are they the same?
What are the differences? What are the advantages of each system for holding a bit suited
to the two different applications?
4. Math. Measure the throat size and depth of cut size on a stationary or bench-top
horizontal band saw. Based on your fi ndings, determine if you could use the saw to safely
crosscut a 6″ × 6″ timber or a 2″ × 4″ × 2′ board. Why could a 12″ horizontal band saw not
be used to cut to the center of a 30″-wide board?
5. Language Arts. Develop an illustrated safety poster for a selected power tool. Present
your work to the class.
Thinking Critically
1. In the 1960s, the Hurst Performance company developed the iconic Jaws of Life®, which
was fi rst used to free race car drivers from wrecked vehicles. Soon, rescue responders
around the globe were also using the tool. Now, this broad class of hydraulic rescue tools
includes tools for spreading parts, cutting mangled structures, and rams for lifting. Use
the Internet or your library to research the function of the hydraulic system within these
power tools and explain why this makes the tool a very important rescue instrument.
2. Imagine that you are building a pole barn. Explain six required job tasks that can be
completed using a circular saw, table saw, and miter saw (two tasks for each type of saw).
Why would you choose that style of power saw for the task?