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INDEXING
The spindle pulley contains 36 equally spaced holes. The index
pin engages with these holes to keep the spindle from turning
while you put a mark on the workpiece.
Figure 18
For example, to locate the position of six spokes on a wheel:
•
Pull the index pin outward and turn it so that the small
cross pin slips into the slot. This will allow the index pin to
engage in one of the holes in the pulley and prevent the
spindle from turning.
•
Adjust the tool rest approximately
at the centerline and
make a mark.
•
Pull out the index pin and slowly rotate the workpiece until
the pin can be pressed into the next available hole.
•
Do this six times and put the next mark on the workpiece.
The two marks will be spaced 60 ° apart. Continue this
operation until six spokes are marked 60 ° apart.
•
Spindle turning can be divided in the same manner.
WARNING:
The indexing pin must be disengaged for all
other operations on the lathe.
Figure 19
OUTBOARD
TURNING
This technique makes it possible to do jobs on this machine
that are too large to mount conventionally. It is straight forward
faceplate turning, except, because of the work size, caution
must be taken and speeds must be restricted to minimums. If
you anticipate doing outboard turning you must build a stand
like the one shown in Figure 20. This is no more than a tool
rest support. Be certain that the top-to-floor distance lets you
place the chisel on the work center line.
CAUTION:
Do not try to push this support when cutting. Do
not try to mount work so large that the motor must strain to
turn it. If you wish to experiment with this technique, do so
with soft woods. Let the heavier, harder wood come later.
The outboard end of the spindle is under the cover. This end
has a 3/4"-16 left hand thread which will accept available
accessory faceplates.
Figure 20
USING WOODWORKING
CHISELS
SELECTION
OF CHISELS
Better chisels have handles approximately 10" long to provide
plenty of grip and leverage. Sharp tools are essential for clean,
easy work. Select tools that will take and hold keen edges.
GOUGE
SKEW
PARTING
TOOL
SPEAR
POINT
FLATNOSE
ROUND
NOSE
Figure 21 - The Six Commonly Used Chisel Types
THEORY OF TURNING
The two classes of chisels are those intended primarily for
cutting, and chisels used only for scraping.
• The cutting chisels are the gouge, skew and parting tool.
These are the most used. They are commonly sharpened
to a razor edge by honing on both sides.
• The scraping chisels are the flatnose, round nose and
spear point. These are not honed on the flat sides - the
wire edges produced by grinding are left on to aid in the
scraping process.
2<
Cutting Chisel
Figure 22
Scraping Chisel
Cutting
and Scraping
• To cut, the chisel is held so that the sharp edge actually
digs into the revolving work to peel off shavings.
• To scrape, the chisel is held at a right angle to the work sur-
face. This tool removes fine particles instead of shavings.
Cutting
Scraping
Figure 23
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