16
9. Machine Setting - Cont.
CAUTION!
Before carrying out any adjustments or
maintenance ensure that the machine is isolated and
disconnected from the electricity supply.
Tensioning the Blade
The blade tensioning knob should be used to increase or
decrease tension
(See Fig. 9.4)
. The only truly accurate
way to check a blade is with a tension meter. These are
very expensive so most users may need another method.
It is suggested to test the tension by the amount the blade
will deflect sideways. First set the guides to 150 mm above
the table, making sure the bandsaw is turned off. Push
the blade sideways with a reasonable amount of pressure
using a push stick. A correctly tensioned blade should not
move more than 4 mm sideways,
Fig. 9.4 A
. If the blade is
over-tightened, as in
Fig 9.4 B
, the blade could
be damaged.
However perhaps the most tried and tested way of blade
tensioning is simply: If the bandsaw is cutting accurately
then the blade is tensioned correctly, if the blade tends to
wander and an accurate cut cannot be achieved then the
blade tension needs adjusting.
If the machine is to stand idle for a period it is good
practice to slacken tension and re-tension when next using.
i
Kg
i
Kg
7
3
Fig. 9.4A
Fig. 9.4B
Summary of Contents for BS10
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