9. SETTING THE WOOD LATHE
10. BASIC WOOD TURNING
10.2 USING WOODWORKING CHISELS - FIG. 19
Professional woodturning chisels have handles
approximately 250mm long. This provides the operator
with good grip and leverage. A sharp chisel will be much
easier to work with and will give the job a cleaner finish.
Fig.11 shows the six most commonly used types of turning
chisel.
10.3 THE THEORY OF TURNING - FIGS. 20 - 21
There are two types of turning chisel. These are:
1. Those intended primarily for cutting,
2. Those used only for scraping.
The cutting chisels are the gouge, skew and parting type.
These are sharpened to a razor edge by honing on both
sides.
The scraping chisels are the flat nose, round nose and
spear point. These are not honed on the flat sides - the
wire edges produced by scraping are left on to aid in the
scraping process (Fig.20). Shows the two types of chisel.
CUTTING AND SCRAPING:
To make a cut, the chisel should be held so that the sharp
edge actually digs into the revolving workpiece, shavings
should now peel off. To scrape, the chisel should be held
at a right angle to the surface of the workpiece, fine
pieces of wood will be produced when scraping instead
of shavings (Fig.21).
Many operations require the cutting chisel to be used for
scraping but scraping chisels are very rarely used for
cutting. Scraping will blunt/dull a chisel much faster
especially when using razor sharp cutting chisels.
Cutting is much faster than scraping and produces a much
smoother finish. Cutting is more difficult than scraping,
but scraping is more precise and easier to control.
FIG.19
FIG.20
FIG.21
Gouge
Skew
Parting
Tool
Spear
Point
Flat
Nose
Round
Nose
FIG.7
FIG.8
FIG.9
FIG.10
9.1 NO-VOLT ON/OFF SWITCH - FIG. 7
NOTE: The WTL95 is fitted with an additional emergency
shut off cover.
In the event of an emergency, closing the cover firmly will
cause the stop button to be triggered, thus stopping the
machine. To re-open the cover, the red button requires
sliding which in turn will release the cover and stop
button.
In the event of a power failure the machine will have to
be manually restarted.
To switch the machine on, lift up the sprung cover and
push the button marked
,
.
To switch the machine off, lift up the sprung cover and
push the button marked
.
To switch the machine off in an emergency strike the
cover
firmly which will trigger the (0) button.
9.2 CHANGING SPEED - FIG. 8
The machine has to be running for the speed change to
move.
With the machine running, pull the lever
away from
the headstock then move it around to the desired speed.
The handle indicates the speed. For example, Fig.10 is set
on speed 1. The Lathe should be in speed 1 (the slowest)
before turning off to aid ease of start up.
9.3 ROTATING THE HEADSTOCK - FIG. 9
The headstock can be rotated 45, 90, 135 and 180°. Loosen
handle
and pull the release pin
. When pin
is
pulled out, the head can be rotated. Once the head is
rotated to the desired angle, release the pin and it will
lock into place. Once setup, retighten handle
.
NOTE: This operation may be necessary for turning bowls,
etc.
9.4 SLIDING THE HEADSTOCK - FIG. 10
By loosening handle
you can slide the headstock along
the bed. Once set in position, lock in place using handle
.
13
16
