Figure 2-49.
Grindstone
b. Oilstones. Oilstones are used after the grinding operation to
give a tool the keen, sharp edge required for smooth cutting (Figure
250).
Figure 2-50.
Oilstone
c. Artificial Stones. These stones have coarse, medium, or fine
grades. Coarse stones are used for general work where fast cutting
is required. Medium stones are used for sharpening tools that do not
require a keen edge. They are recommended for sharpening tools that
are used for working softwoods. Fine stones are used where a keen
edge is desired. Cabinetmakers whose tools require a very fine, keen
edge use the fine type of stone.
2-27
EN5155
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