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Broached / Droved / Batting
- a tooling on the face of masonry which both levels off
the surface of the stone,
and provides a decorative effect, most often found on
door or margins margins,
sometimes on ashlar work, broaching consists of parallel grooves which run virtually the
full length of the stone, cut with a sharp chisel (a pinch), or
the sharp edge of a wider
chisel, (a bolster). These are usually horizontal but
sometimes vertical and nearly always come with
a margin draft.
Droved (droving) is also a tooling process, where the grooves are cut with a bolster
to form a series of lines which are the length of the blade (35-50mm) only. Droving is more usually vertical
and tends to be finer than broaching. Droving has been referred to as a process where the stone is
"tooled clean after being broached".
Batting is more of a generic term referring to any tooling of stonework
which leaves a series of regular cuts.