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Chapter 30 Scrapers
Safety - 14256_197

Tools And Their Uses - Hand tools and what they are used for
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TM 9-243 TYPES AND USES Scrapers  are  made  in  different  shapes  for  various  types of work. Some scrapers are used for trueing metal, wood,  and  plastic  surfaces  which  have  been  machined or filed. Other scrapers are made to remove paint, sten- cil  markings,  and  other  coatings  from  various  surfaces. BOX   SCRAPER CARBON  SCRAPER A  carbon  scraper  is  used  to  clean  carbon  from,  cylinder heads, pistons, and other metal surfaces. It is flexible and  has  an  overall  length  of  approximately  9  inches.  The carbon scraper consists of ten round spring steel blades, and their flexibility is controlled by a sliding ferrule. Box  scrapers  are  most  generally  used  to  scrape  stencil markings from wood surfaces. They are also used as wood  floor  scrapers.  The  box  scraper  has  a  2-inch  blade and  a  9-inch  handle  hinged  at  the  blade.  The  bottom  of the scraper and the edge of the cutter are convex so that corners do not scratch up the work. The blade can be adjusted  by  loosening  the  thumbscrew  and  extending  or withdrawing the blade in its holder. FLAT  BLADE  SCRAPER BEARING  SCRAPER Flat blade scrapers are used for removing high spots from flat surfaces only. Bearing scrapers are used to scrape babbitt metal bearings. Bearing scrapers come with 1-1/2, 2, and 4-inch cutting edges. TRIANGULAR  BLADE  SCRAPER Triangular blade scrapers are used for removing high spots from flat or curved surfaces. They are available with either a 4 or 6-inch blade. 30-2







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