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Builder 3&2 Volume 01 - Construction manual for building structures | Next
Portable Electric Circular Saw |
as shown in figure 3-14. A semicircular opening is
sawed in the edge of the straightedge to accommodate
the spindle and the cutters. Whenever possible, a
guard of the type shown in the figure should be placed
over the spindle.
For shaping curved edges, there are usually a
couple of holes in the table, one on either side of the
spindle, in which vertical starter pins can be inserted.
When a curved edge is being shaped, the piece is
guided by and steadied against the starter pin and the
ball bearing collar on the spindle.
When operating a shaper, observe the following
safety precautions:
Like the jointer and surfacer, the shaper cuts
toward the infeed side of the spindle, which is
against the rotation of the spindle. Therefore,
stock should be placed with the grain running
toward the infeed side.
Make sure the cutters are sharp and well
secured.
If curved or irregularly shaped edges are to be
shaped, place the stock in position and make
sure the collar will rub against the part of the
edge, which should not be removed.
Whenever the straight fence cannot be
always use a starting pin in the table top.
used,
Never make extremely deep cuts.
Make sure the shaper cutters rotate toward the
work.
Whenever possible, always use a guard,
pressure bar, hold-down, or holding jig.
If possible, place the cutter on the shaper
spindle so that the cutting will be done on the
lower side of the stock.
Do not attempt to shape small pieces of wood.
Check all adjustments before turning on the
power.
SAFETY NOTE
The spindle shaper is one of the most
dangerous machines used in the shop. Use
extreme caution at all times.
PORTABLE HAND TOOLS
In addition to using power shop tools, you will be
required to operate different types of portable hand
tools in the field. You therefore need to understand
the safety precautions associated with these.
Figure 3-14.—Shaper table showing straightedge fence and guard.
3-12
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