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.
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.
Fig. 60
Fig. 61
Fig. 62
Fig. 63
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.
Fig. 64
Fig. 65
Fig. 66
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