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Both the toe and the heel of the skew can be used for taking light
cuts, but do not penetrate the wood too deeply. For adequate
cutting clearance, the cut area must be slightly wider than
the tool. Without it there is danger of burning the tool tip.
Direction
Pull
Tool
_
of Cut
Back
Swing
__
--_ .__
_upport/'
/
Edge Does
T_-_
_,,_)
Not Cut
Using Toe
Using
Figure 29
USING THE PARTING TOOL
The parting tool has just one primary purpose: to cut into the
workpiece as deeply as desired, or all the way through to make a
cut-off. It is, therefore, a very narrow tool (l/j, wide) and shaped to
cut its own clearance so that the edge will not be burned. When
used for scraping, however, the parting tool should be backed
off regularly to prevent overheating.
Unlike the gouge and skew, the parting tool is seldom held with
the bevel against the work. Since the amount of stock removal
is small, a support for the bevel is not necessary.
The tool is simply fed into the work at an angle (for cutting), or
pointed at the workpiece center (for scraping). It can be held
easily in one hand.
Figure 30
Cutting
Scraping
,4--,,
USING THE SCRAPING CHISELS
•
A 1/21t wide spear point chisel, a 1/2"wide round nose chisel,
and a 1" wide flat nose chisel complete the list of tools
ordinarily used by craftsmen and hobbyists.
Each of these scraping chisels can be purchased in various
other sizes for special purposes. All are very useful for diame-
ter scraping operations and for circumference
scraping when
cutting methods cannot be employed.
•
The spear point is used for fine scraping and delicate oper-
ations such as the forming of beads, parallel grooves and
shallow vees.
•
Edges and bowl contours can be rounded with the round
nose chisel.
•
Any flat surface can be scraped with the flat nose chisel.
Figure 31
Spear
Round
Flat Nose
Point
Nose
USING SHAPER OR MOULDING
KNIVES
•
An old chisel can be made to serve as a holder for shaper
or moulding knives.
Such knives make it possible to scrape many interesting
shapes into the workpiece surface using one or two operations
instead of the many operations required with standard chisels.
It is generally not practical to use cutting methods with special
shape tools. Scraping methods should be used instead.
• The holder should provide a shoulder against which the
butt end of the knife can be firmly seated.The
knife must
be securely mounted, either by means of a screw threaded
into the holder, or by compressing
it between two prongs
bolted together.
Figure 32
USING A BLOCK PLANE
Clear, glass-smooth
finishes (especially on softwoods) can
be obtained by using a block plane set to take a fine shaving.
• The tool rest should be raised up approximately to the top
of the workpiece - and the plane should be horizontal, but
turned slightly in the direction of travel so that it will take
a shearing cut.
• Two tool rests, one in front and the other behind the work, can
be used to advantage in positioning the plane so as to exactly
limit the depth of cut (and finished size of the workpiece).
Figure 33
USING WOOD RASPS AND FILES
•
A wood rasp will remove stock quickly when held against
the revolving workpiece. Care should be taken to support
the rasp firmly against the tool rest. An improperly held
rasp, when used on a rough surface, can kick back and
cause operator injury.
• The rasp will leave a very rough finish.
•
Finer finishes (similar to those produced by scraping) can
be obtained by using files in the same manner. Various
types of files can be used for shaping vees, beads, coves,
etc. If pressed too hard into the wood, some files can burn
the workpiece.
•
Keep the file clean to keep it cutting uniformly. Files work
best on hardwoods.
Figure 34 - Using a Rasp
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