Paragraph 84. The old-fashioned jack plane, which was formerly used for all sorts of general purpose work, has almost entirely gone out of use. The jack plane was constructed with a large open throat, the blade was ground somewhat rounding so it could be set to take a very thick shaving without causing the corners of the blade to tear the wood. This plane was used to dress weather boarding, flooring and all sorts of heavy work, in the early days when all planing was done by hand. Now, this sort of planing is done by electric or steam power, so the old-fashioned jack plane has practically gone out of use. The word, however, is still used frequently in referring to the ordinary general purpose bench plane. This is the plane with which you will do a large portion of your work. An illustration and explanation will be given in this discussion.