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3.
The rear fence should then be advanced to contact
the work (Fig. 27), putting it in line with the cutting
circle.
S H A P I N G W I T H C O L L A R S A N D
STARTING PIN
When shaping with collars and starting pin, follow the
rules below for superior finishing and safety in operation.
1. Free the collars of ALL gum or other substances,
and make sure that they are smooth.
2. Check to see that the edge of the work is smooth.
ANY irregularity in the surface that rides against the
collar will be duplicated on the moulded surface.
3. A portion of the edge of the work MUST remain
untouched by the cutters in order that the collar will
have sufficient bearing surface. The wrong method
is shown in Fig. 28, while Fig. 29 illustrates the right
method.
4. The work MUST be fairly heavy in proportion to the
cut being made (Fig. 30). Under NO circumstances
should short work of light body be shaped against
the collars (Fig. 31).
5. When shaping with collars and starting pin, use the
spindle guard supplied with the tool.
POSITION OF COLLARS
1.
The collars may be used in any of three positions:
above, below, or between two cutters.
2.
When the collar is used below the cutter (Fig. 32),
the operator can see the progress of the cut. NOTE:
Any accidental lifting of the work will gouge the
wood and ruin the workpiece.
3.
When the collar is used above the cutter (Fig. 33),
the operator will be unable to see the cut. However,
the advantage in this method is that the cut is not
affected by slight variations in the thickness of the
stock. Also, accidental lifting of the work will not
gouge the workpiece. Simple correction for the
mistake is to repeat the operation.
4.
The collar between cutters method (Fig. 34) has the
advantages of the first two methods and is
frequently used when both edges of the work are to
be shaped.
Fig. 30
13
Fig. 27
Fig. 28
Fig. 29
Fig. 31
Fig. 32
Fig. 33
Fig. 34
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