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It is
similarly forbidden to put together any other article, unless it
is made to come apart.
Smoothing a
stone and smoothing wood is also in this category. It therefore
precludes all forms of sculpture and shop work. Sharpening a knife
is also in this category.
This heading
also forbids us to cut or tear paper in any way. To take a very
mundane example, one may not tear toilet paper on the Sabbath.
Religious Jews therefore only use pre-cut paper.
Putting the
finishing touch on any article is also in this category. Thus, for
example, one may not put new laces into shoes.
Any form of
adjustment comes under this heading. Thus, one may not wind a
clock or set a watch.
It is
similarly forbidden to tune any kind of musical instrument.. The
Rabbis forbade the use of all musical instruments on the Sabbath.
Blowing up a
balloon or water wings also comes under this category.
The
same is true of setting the sails on a boat. For this reason, the
Sanhedrin forbade the riding of small boats on the Sabbath. (One
may, however, ride a large ship piloted by non-Jews, as long as he
does not embark or disembark on the Sabbath.) There is a special
rabbinic enactment that swimming is not permitted on the
Sabbath.
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