Delta 43-424 - Manual (Page 21)

21
SHAPING WITH COLLARS AND STARTING PIN
When shaping with collars and starting pin, the following rules must always be followed for good work
and safety in operation.
Fig. 60
Fig. 61
Fig. 62
Fig. 63
Fig. 64
Fig. 65
Fig. 66
1. Collars MUST be smooth and free of all gum or other
substances.
2. The edge of the work to be shaped MUST be smooth,
as any irregularity in the surface which 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. Fig. 60, illustrates the wrong
way for the operation, while Fig. 61 illustrates the right
way.
4. The work MUST be fairly heavy in proportion to the
cut being made as shown in Fig. 62. Under NO
circumstances should short work of light body be
shaped against the collars as shown in Fig. 63.
5. When shaping with collars and starting pin, the Safe
Guard II spindle guard, supplied with your machine, should
always be used.
POSITION OF COLLARS
1. The collars may be used in any of the following
positions: above, below or between two cutters.
2. When the collar is used below the cutter, a shown in
Fig. 64, the progress of the cut can be observed at all
times. However, any accidental lifting of the work will
gouge the wood and ruin the workpiece.
3. When the collar is used above the cutter as shown in
Fig. 65, the cut cannot be seen, yet this method offers
some advantage in 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. Simply
correct the mistake by repeating the operation.
4. The collar between cutters method, as shown in
Fig. 66, has both the advantages of the first two methods
and is frequently used where both edges of the work are
to be shaped.