title: Forty Power Tools You Can Make: Time and Labor Saving MacHines Constructed at Low Cost
author: Editors of Popular Mechanics Magazine
description: A book of time and labor saving machines constructed at low cost
zlib_text: Periodicals Postage Paid • USPS 100 Approved Poly
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  machinedesign.com
  MARCH 2016 
  NEW MATERIALS PUSH 
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  MAKING 
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  WORK FOR YOU p. 36
  FRICTION AND 
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  BRAKES p. 42
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