Installing Blades - Black & Decker BT1650 Instruction Manual

16" variable speed scroll saw
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26 • ENGLISH
in accidental starting causing possible serious injury.
► Loosen the drop foot lock knob and move drop foot rod
all the way up. Retighten drop foot lock knob.
► Loosen the table lock knob to tilt the saw table until it is
approximately perpendicular or at right angle to the blade.
► Place a small square on the saw table next to the blade.
► Loosen the screw holding the scale indicator Fig. E.
Move indicator to the 0° mark and securely tighten screw.
Remember, the bevel scale is a convenient guide but should
not be relied upon for precision. Make practice cuts on scrap
material to determine if your angle settings are correct.
► Adjust the drop foot to desired position and securely
retighten the drop foot lock knob.
Setting the Table for Horizontal or Bevel Cutting (Fig. E)
Warning! Failure to turn the saw off, remove the switch
key, and unplug the saw from the power source could result in
accidental starting causing possible serious injury.
A bevel scale is located under the saw table as a convenient
guide for setting the approximate saw table angle for bevel
cutting. When greater precision is required, make practice
cuts on scrap material and adjust the saw table as necessary
for your requirements.
Note: When cutting at angles, the drop foot should be tilted
so it is parallel to the saw table and rests flat against the
workpiece. To tilt the drop foot, loosen phillips screw, tilt drop
foot to the proper angle, then retighten screw.
Adjusting Drop Foot
► Loosen the drop foot lock knob. See Fig. D.
► Center the drop foot around the saw blade to the desired
position.
► Tighten the drop foot lock knob.
Adjusting Blade Tension (Fig. F)
► Turn off and unplug the saw from the power source.
Warning! Failure to turn the saw off, remove the switch
key, and unplug the saw from the power source could result in
accidental starting causing possible serious injury.
► Turning the blade tension knob counterclockwise decreases
(or loosens) blade tension.
► Turning the blade tension knob clockwise increases
(or tightens) blade tension.
Note: Adjustments to blade tension can be made at any time.
Check tension by the sound the blade makes when plucked
like a guitar string. This method of adding tension to the
blade can be developed with practice and requires knowing
your scroll saw.
► Pluck the back straight edge of blade while turning tension
adjusting knob. Sound should be a musical note. Sound
becomes less flat as tension increases. Sound decreases
with too much tension.
Note: Be careful not to adjust blade too tight. Too much
tension may cause the blade to break as soon as you start
cutting. Too little tension may cause the blade to bend or
break before the teeth wear out.

INSTALLING BLADES

Scroll saw blades wear out quickly and must be replaced
frequently for best cutting results. Expect to break some
blades while you learn to use and adjust your saw. Blades
generally stay sharp for 1/2 hour to 2 hours of cutting,
depending on the type of material and speed of operation.
Pin end Blades (Fig. G)
Removing the Saw Blade:
► Turn off and unplug the saw from the power source.
Warning! Failure to turn the saw off, remove the switch
key, and unplug the saw from the power source could result in
accidental starting causing possible serious injury.
► Turn blade tension knob counterclockwise to decrease
(or loosen) blade tension Fig. A.
► Pushing up from under the saw table, remove the throat plate.
► Using the "T-handle" hex key supplied with the saw, loosen
both the upper and lower blade clamp screws.
► Pull up on the blade and push down on the saw arm
to disengage the upper pin in the "V-notch" of the upper
blade holder. Push the blade downward to disengage
the lower pin in the "V-notch" of the lower blade holder.
► Remove the blade.
Replacing the saw blade:
► Place the new blade through the opening in the saw table
with the teeth to the front of the saw and pointing down
toward the saw table.
► The pins on the blade go under the blade holder
in the "V-notch" of the lower blade holder.
► Pull up on the blade and press the upper arm down to
position the upper end of the blade in the "V-notch"
in the upper blade holder.
► Securely tighten the upper and lower blade clamps using
the "T-handle" hex key supplied with the saw.
► Turn the blade tension knob clockwise until the blade has
the desired amount of tension.
► Replace the throat plate.
Note: If the blade touches the drop foot on either side
then the drop foot must be adjusted. See section on
"Adjusting Drop Foot".
Plain end Blades
(Fig. G)
► Turn off and unplug the saw from the power source.
Warning! Failure to turn the saw off, remove the switch

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