TYPES AND USES - Continued
The blades of an adjustable reamer are separate from
the body and are fitted into grooves in the threaded
shank of the tool. Adjusting nuts located below and
above the blades control the diameter of the reamer.
The reamers come with straight (1) or spiral flutes (2),
with or without a floating pilot on solid mandrels, and in
several sizes. Adjustable reamers are also available in
sets. They are used to enlarge drilled holes to an exact
true size using a series of small cuts rather than one
Pipe reamers are made of carbon steel. They are
tapered with straight or spiral flutes. They come in three
sizes, 1/8-inch to 1-inch pipe capacity, 1/4-inch to 1-1/4-
inch pipe capacity, and 1/4-inch to 2-inch pipe capacity.
Most pipe reamers are designed to receive a T-handle
(1). Others (2) have a tapered square shank for use
with a brace, or a round shank for use with a hand drill.
They are used to remove burrs from the inside
diameters of pipe and drilled holes.
USING A SOLID STRAIGHT-HOLE REAMER
Secure the work in a vise so that the hole to be
reamed is perpendicular to the top of the vise
Using a tap wrench (1), tighten the handle to the
square end of the reamer shank (2).
counterclockwise at any time. To do
so will cause the reamer to become
Position the reamer (3) at the top of the hole.
Turn the wrench clockwise very slowly until the
reamer is centered in the hole. Straight-hole
reamers (4) have a slight taper at the end so
they will fit into the hole easily.