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A D-handle router is a tool that ‘routs’ or
scoops out a depression in the surface of a material such as wood. This
is a versatile tool that is used to mold edges, cut joints, create
grooves, or radius the edge of a piece of wood. Chamfering of wood,
rendering it a round beveled edge, is also possible with a D-handle
router. This tool is mostly used by carpenters, building contractors,
and artisans to combine efficiency in the finished product with an
aesthetic appeal. It is commonly used in staircase building and pattern
making. In addition to its professional applications, the D-handle
router is a useful tool to have at home. It can be used to round and
blunt sharp edges and also render a three-dimensional look to the
furniture. Sometimes, the router is used just to provide a decorative
touch to the product.
Features and working of a D-handle router
The D-handle router has a cylinder-like body
that contains the motor. A collet, which is a hexagonal holder, is
located at the top end of the router. This is the component that firmly
holds the tool bit in place. The collet can be tightened or loosened
with a wrench. The bit protrudes out through a circular base plate.
The bit is one of the most important parts of
the router, which actually performs the task required of the router.
Router bits are of varied types depending on the task to be performed.
Based on construction, they are broadly classified as either high-speed
steel bits or carbide tipped bits. Further, the bits can be grouped
into three categories; edge bits, non-edge bits, and anti-kickback
bits. Edge bits are normally used in edge molding and incorporate a
small wheel bearing apparatus, forming a Fence against the work
surface. Non-edge bits need an exclusive fence, connected to either the
work or the router itself. Anti-kickback bits incorporate a packing
below the edge of bit to prevent too-deep a gash into the work piece,
causing a kickback. Bits are also differentiated by their shank
diameter, varying between half inch, 12 mm, 10 mm, 3/8 inch, 8 mm,
quarter inch, and 6 mm. It is necessary for the bit shank and the
collet sizes to match. A rigid flat top ensures stability when changing
bits.
Routers are generally of two types; plunge
based and fixed based. Plunge based routers work by connecting the
cutting bit with the work surface after the motor is turned on. Fixed
based routers require the cut depth to be decided before the actual
task is initiated.
The body of the router is generally
constructed of magnesium to provide for a resilient and lightweight
tool. The templet guide can be changed quickly with a tool-free templet
guide adaptor. For enhanced accuracy, the precision centering design
ensures that the bit is centered, which is a useful feature when a task
requires multiple passes, such as jig cutting. The depth can be
controlled through the coarse and microfine bit depth adjustment
facility. An industrial cam lock doubles up to facilitate depth
adjustment and motor detachment.
The average router uses an 11 amp, 1-3/4
horsepower motor. The D handle enables the user to control the tool
easily and an auxiliary handle provides further stability. The speed of
the tool can be adjusted by the user, which can vary from around 8000
revolutions per minute (rpm) to around 24,000 rpm. An aluminum housing
for the motor increases durability.
What to look for in a D-handle router
A D-handle router is usually provided with an
ergonomically contoured soft D handle to enhance comfort and reduce
fatigue during intense prolonged usage. The palm grip side handle
enables two handed operation of the tool. To accommodate even larger
bits, the tool may have a larger center hole. A lock-on button keeps
the tools operational continuously. The design of the center hole
provides a clear line of sight for the user, enhancing speed and
accuracy.
As with any tool having a motor and so many
vibrating parts, there is bound to be operational noise which could be
detrimental to the user’s ears in the long run. The D-handle router
should minimize the noise Levels to around 81 decibels, along with
lower vibrations. To increase efficiency, the tool is provided with a
soft start feature resulting in quick issueless start-up.
Reputed
manufacturers of D-handle Routers include Dewalt, Milwaukee, and Porter
Cable.
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