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10. ADVANCE JIGSAW OPERATION

10.1 INTERNAL CUTS - FIG. 5

There are two options for making internal cuts in

workpieces:

i. Using a flat wood bit, drill a large enough

hole in an area within the waste part of the

workpiece in order to provide a starting

point for the jigsaw blade.

ii. Alternatively the saw blade can be directly

inserted into the material (only for wood

workpieces). This operation should only be

performed by operators with considerable

work experience and with short blades

only.

With the machine running at full speed the

saw blade should be rested on the

workpiece at an angle of 55°- 60° (Fig.5.) in

relation to the front edge of the base. It

should then be pressed slowly and carefully

onto the material.

The first phase of the operation should be

undertaken with great care: sudden

counter-strokes and overloads during

contact between the blade and workpiece,

or excessive rapid penetration of the

material, can provoke blade breakage.

This method of starting an internal cut

should only be carried out at maximum

speed.

FIG.5