Draper BS355A Talimatlar Kılavuzu - Sayfa 15

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Draper BS355A Talimatlar Kılavuzu
For all cutting operations the upper
blade guard should be adjusted to just
clear the work being cut (approx. 3mm
1
or
"). Not only does this provide the
8
best operator safety, but it also brings
the blade guides closer to the work
giving more accurate results and easier
control.
Use both hands to feed the workpiece
into the blade. The work must be held
flat on the table at all times to prevent
binding of the blade. Use a steady even
pressure just sufficient to keep the blade
cutting at full speed.
Always use a rip fence or mitre guide
where possible to eliminate any
sideways slip of the work. This is most
important when the table is tilted to an
angle.
Always plan work ahead. The
tradesmans' rule is "measure twice, cut
once". It is best to finish a cut in one
continuous operation, but frequently
backtracking will be necessary. Turn off
the motor and allow the blade to come
to a complete stop before backing the
blade out of the cut.
Remember that the blade removes
material during the cut. This gap created
by the blade is called the kerf and must
be allowed for when cutting to exact
sizes. Plan your cut so that the kerf is to
the scrap side of the line you wish to cut.
If necessary, allow a little more for finish
sanding.
RIP SAWING
This term refers to the cutting of timber
with the grain rather than across the
grain.You can rip wood freehand to a
previously drawn line, but best results
are obtained by using the rip fence. If
the table is level, set the rip fence to the
left hand side of the blade. This allows
you to use your right hand to hold the
work firmly against the fence. The width
of cut indicator on the front of the
worktable shows the distance between
the blade and the right hand edge of the
timber.
When cutting a bevel rip, with the table
tilted at any angle up to 45˚, set the rip
fence to the right hand side of the blade
if the width of the workpiece allows it.
With the fence on the downhill side of

TIPS ON USING YOUR BANDSAW

the table it will help support the work
against slip. The width of cut indicator
shows the distance between the blade
and the rip fence at the table surface.
CROSS CUTTING
This term refers to the cutting of timber
across the grain. This type of cut can also
be made freehand or with the aid of the
mitre guide. The mitre guide can be
adjusted to a 45˚ angle to assist during
mitre cuts, and with compound mitre
cuts.
Make sure the work is held firmly
against the table and against the face of
the mitre guide. Be careful to keep your
fingers away from the blade, particularly
at the end of the cut.
FREEHAND SAWING
The ease with which many different and
varied shapes can be cut is one of the
most important features of the bandsaw.
Select a blade suitable for cutting the
smallest radius in the work you have
planned.
When freehand cutting always feed the
work slowly so that the blade can follow
the line you wish to saw. Make sure not
to drag the work off line forcing the
blade sideways, or twisting it.
In many cases, it is helpful to rough cut
about 6mm away from the line in difficult
curves and corners. In the case of very
sharp curves which may be too tight for
the blade, make relief cuts onto the face
of the curve so that these scraps will fall
as the final radius is sawn.
CUTTING NONFERROUS METALS
Metal must only be cut at the lowest
speed on your bandsaw. Never attempt
metal sawing at wood cutting speed -
your blade will burn up very quickly.
Other than speed and correct blade
selection, metal sawing is much the
same as wood sawing, however, the rate
at which you feed the work into the
blade must be reduced to only as fast as
the blade can cut.
Also, metals do not have the 'give' that
timber has, so the work must be held
very firmly to prevent twisting or
misalignment of the blade while
feeding.
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