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.
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