7
4.BLADE INSTALLATION / RENEWAL
1.
Before installing or removing blades, turn OFF the saw and disconnect it from the supply.
Remove the blade as described in ‘Blade Holder Alignment’, above.
NOTE:
Whilst the blade is out of the housings, look at the blade housings closely. You will observe that the
blade slots and pin recesses are made so you can position the blade for cutting from the front, or
from the side (see fig. 2 ). Cutting from the side is necessary when your workpiece is over 13" long.
IMPORTANT:
Side cutting can only be performed when the table is set at 0
O
.
2.
With the blade teeth pointing DOWNWARDS, slot the new blade into the lower housing so
that the pins on the end of the blade, engage in the recess in the holder.
3.
Hook the upper blade pins into the slots in the upper holder.
4.
Apply tension the the blade by screwing the tension knob clockwise.
NOTES ON SAW BLADES
IMPORTANT: ALWAYS USE GOOD QUALITY BLADES
BLADES BREAK FOR FIVE PRINCIPAL REASONS
:
1.
Too much tension or too little tension on the blade.
2.
Overworking the blade by feeding the workpiece too fast.
3.
Twisting or bending the blade by feeding the workpiece off-centre.
4.
Over use - the blade has reached the end of its useful life.
5.
Feeding too much material into the saw, - more than the maximum 40mm (1½”) depth
for which it was designed.
HOW TO DETERMINE THE RIGHT BLADE FOR THE JOB
This scroll saw accepts a wide variety of blade widths and thicknesses. The width of the blade ,
the thickness of the blade, and the number of teeth per inch (TPI) are determined by the type of
material and size of the radius being cut. Here are several examples:
TPI
WIDTH
THICKNESS
MATERIAL
10
2.8mm
0.5mm
Medium curves on 1/4" to 1-1/2" wood, wallboard,
0.11"
0.020"
hardboard.
15
2.8mm
0.5mm
Same as above, plus wood 1/8" to 1-1/4" thick
0.11"
0.020"
18
2.4mm
0.25mm
Extra thin cuts on soft woods to 1/4" and parquetry
0.095"
0.011
As a general rule, select the narrowest blades recommended for intricate curve cutting and
widest blades for straight and large curve operations.
BEVEL CUTTING
When cutting bevels, set the table to your desired angle using the pointer as an indicator.
It should be remembered however that the bevel scale is a convenient indicator only, it is not
guaranteed to be 100% accurate. Where absolute accuracy is required, always double check
with a protractor before starting a cut.
