extra time
An hourly charge imposed by a binder or bindery,
in the latter example, usually a library binder,
for excessive repairs, mending, guarding, scoring,
etc., beyond the extent considered "normal" for
the average book. "Extra time" would normally
apply to operations involved in sewing a book
through the folds instead of oversewing. It may
also apply to the repair and/or cleaning of water-
or smoke-damaged books, or other unusual and/ or
time consuming work. "Extra time" is not meant to
be applied in cases of regular work involved in
library binding, e.g., collating.