Delta 46-715 Instruction Manual Page 15

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  • TROUBLESHOOTING
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15
CUTTING A SHOULDER
Use the parting tool first to reduce the wood to within 1/16” of
the required shoulder and diameter (Fig. 43). Clean the waste
stock out with the gouge (Fig. 45A), then use the skew for the
actual cutting of the shoulder (Figs. 45A and 45B), which is a
duplication of squaring an end. The skew then makes the
horizontal cut, but in a different manner from plain cylinder
work. If the shoulder is long, use the ordinary skew position for
the outer portion of the cut. Move the chisel in at the angle
shown in Fig. 45B. In this position, raise the handle of the
chisel slightly to allow it to cut while the tool moves along the
rest. Use a very light cut to produce smooth work. The heel of
the skew can be used for making the entire cut, if desired, but
the cut, whether in this position or any other position, should
not be picked up directly at the end of the stock. Horizontal
cuts started directly from the end of the work will have a
tendency to bite into the wood, often ruining the entire piece.
Always run off the end and not into it. Where a very short
shoulder makes this impossible, use the skew in a flat scraping
position. If the cutting technique is used, engage only with the
heel of skew in a very light cut.
CUTTING SMALL BEADS
Beads can be scraped or cut. Using the spear chisel is the
easiest method of scraping, and works to best advantage on
beads separated by parting tool cuts (Fig. 46). Scraping is
slower than cutting and is not as clean, but it has the
advantage of protecting the work from long gashes.
Cutting beads quickly and accurately with the small skew is
one of the most difficult lathe operations. Various working
methods can be used . The first cut is a vertical incision at the
point where the two curved surfaces will eventually come
together. Make this cut with either heel or toe of skew. Fig. 47
shows the use of the toe. Place the skew at right angles to the
work . Place the chisel flat on its side at the start, and rotate it
evenly through the successive stages of the cut (Figs. 48, 49,
and 50). At the same time, pull the chisel slightly backward to
maintain the cutting point. Make the entire cut with the heel of
chisel. The opposite side of the bead is cut in the same
manner, one cut serving to produce the full shape in each
instance. This action produces beads that are beautifully
smooth and polished, and the technique is well worth
mastering.
Fig. 49
Fig. 50
Fig. 47
Fig. 46
Fig. 48
Fig. 45A
Fig. 45B
Fig. 43
Fig. 44
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