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,
stencil markings, and other coatings from various
surfaces.
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.
BEARING SCRAPER
Bearing scrapers are used to scrape babbitt metal
bearings. Bearing scrapers come with 1-1/2, 2, and 4-
inch cutting edges.
BOX SCRAPER
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
Flat blade scrapers are used for removing high spots
from flat surfaces only.
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.
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