20
10. BASIC WOOD TURNING
FIG.34
10.10 USING A PARTING CHISEL - FIGS. 34 - 35
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.34, 35.
10.11 USING SCRAPING CHISELS - FIGS. 36 - 38
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.36, 37, 38)
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.35
FIG.36
FIG.38
FIG.37
