Delta 46-715 Instruction Manual Page 14

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14
SMOOTHING A CYLINDER
To smooth a cylinder, use a large skew chisel. This requires
practice, but experience with this tool is very important. Place
the cutting point near the center of chisel and high on the work
(Fig. 38). Sometimes, in striving for a certain position in relation
to the work, the beginner will often overlook this all-important
point. Raising the handle will increase the depth of cut while
lowering the handle, of course, does the opposite. As with the
gouge, you can advance the skew in either direction. The
center of the skew toward the heel does the actual cutting. The
back portion of the grind or bevel supports the tool, while the
handle-hand controls the depth of cut by rocking the chisel on
this pivot point. Because of this, keep the skew bevel perfectly
flat.
USING THE PARTING TOOL
The parting tool is perhaps the easiest turning chisel to handle.
Simply push this scraping tool into the work (Fig. 39). You can
achieve a somewhat better cutting action if the handle is held
low. This tool is, in many cases, held with one hand while the
other hand holds the calipers in the cutting groove. When
parting tool cuts are deep, make a clearance cut alongside the
first cut (Fig. 40) to prevent burning the tool point.
SQUARING AN END
You can use the parting tool to quickly square an end. Since
the parting tool is a rough cutter, the cut can then be smoothed
by the use of the skew. However, you can do the whole
operation with the skew. First, make a nicking cut with the toe
of the skew (Fig. 41). A deep cut here could burn the chisel, so
make a clearance cut by inclining the skew away from the first
cut and pushing the tool into the work. This procedure of side
cut and clearance cut is continued as often as needed.
NOTE: While the skew can be pushed into the wood in any
direction, the cutting edge itself must be inclined a little away
from this plane. If the full cutting edge of skew bears against
the cut surface, the tool will have a tendency to run. See Fig.
42 for the proper way to make the cut. Push the chisel straight
into the work, and incline the cutting edge away from the cut
surface. Use only the extreme end of the toe for this cut. This
important principle in skew handling will be used repeatedly in
making shoulders, beads and vee cuts.
Fig. 38
Fig. 39
Fig. 40
Fig. 41
Fig. 42
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