BASIC WOODTURNING
- 16 -
USING A PARTING CHISEL
A parting chisel has one primary purpose - to
cut straight into the workpiece as deep as
desired, or all the way through the workpiece
to make a cut off. This is a very narrow chisel,
approximately 3mm wide and is shaped to cut
its own clearance, so the cutting edge will not
burn. But when used as a scraper, it should be
backed off at regular intervals to prevent
overheating. See
Fig.43, 44
.
USING SCRAPING CHISELS
Finally, three more types of chisel should
complete the list of chisels for the average
craftsman, these are 12mm spear point, 12mm
round nose and 26mm flat nose. Each of these
chisels may be purchased in various sizes,
(refer to the Draper Catalogue) for special
jobs. All of these are very useful for diameter
scraping (see Figs.45, 46, 47) operations and
for circumference scraping when cutting
methods cannot be employed.
The spear point chisel is used for fine
scraping and delicate operations 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.
Fig.43.
Fig.44.
Fig.45.
Fig.47.
Fig.46.
