Although normally considered together, there are significant differences in the conventional uses of these two types of tool.
The parting tool is specifically designed for parting, or cutting, off a spindle workpiece.
The beading tool is normally used for the external shaping of beads - decorative ridges often applied to spindles.
The parting tool is sometimes used to form small beads and the beading tool can be used as a broad parting tool, but the parting tool being narrow and deep is much more rigid than the broader, flatter beading tool, which is usually square in cross-section.
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