Clarke 6500685, Инструкция по эксплуатации и обслуживанию

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Better chisels have handles approximately 10"
(250mm) long, to provide plenty of grip and
leverage. Sharp tools are essential for clean,
easy work. Buy tools that will take and hold keen
edges.
An 8 piece chisel set is available from your
CLARKE dealer, part no. 6500649
2. THEORY OF TURNING
There are two classes of chisel; these are :
a . Chisels intended primarily for cutting, and
b . Chisels used only for scraping.
The cutting chisels are the gouge, skew and
parting tool. These are most commonly used.
They 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 grinding
are left on to aid in the scraping process.
must faster, especially the razor sharp cutting
chisels.
Cutting is faster than scraping and produces a
smoother finish which requires less sanding.
However, it is far more difficult to master.
Scraping, on the other hand, is far more precise
and easier to control.
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USING WOODWORKING CHISELS
THE SIX MOST COMMONLY USED CHISEL TYPES
2.1 Cutting and Scraping
To cut, the chisel is held so that the sharp edge
actually digs into the revolving work to peel off
a shaving.
To scrape, the chisel is held at a right angle to
the wor k surface as shown in fig. 12, and
removes fine particles instead of shavings.
Many operations require that the cutting chisels
be used for scraping, but scraping chisels are
never used for cutting. Scraping dulls a chisel
Cutting Chisel Scraping Chisel
2.2 When You Can Cut and When You
Must Scrape.
There are two different types of cut to consider
when turning.
One is cutting at the circumference of the
workpiece (for example, turning down the outer
surface of a cylinder or the inner wall of a hollow
round box, as shown in fig. 13). In this approach
the surface being turned travels under the chisel
edge like an endless belt.
The second type is cutting at the diameter of a
wor kpiece (as when tur ning the face of
faceplate turning or the side of a large shoulder
on a spindle turning, as shown in fig. 13). In this
approach the surface being turned rotates like
a disc under the chisel edge. Sometimes the
approach will be a combination of both.
Fig. 10
Fig. 12
Fig. 11
Fig. 13
1. SELECTION OF CHISELS