The joints of a workbench are quite sure to work loose in time, and it is important that they be constructed in such a way that they may be tightened from time to time. The construction shown in Fig. 15 is one that the writer has used with perfect satisfaction for years. The frame of the bench is made of 2 by 3-inch sticks. Sockets are cut in two adjoining faces of the post to receive the tongues formed on the horizontal sticks of the frame. The sockets are made deeper than the tongues, so as to permit of adjustment. A hole is bored through the post and endwise into one of the horizontal sticks through the tongue. A bolt is fitted into this bore and is screwed into a nut which is introduced into the stick through a transverse hole. In the same way the other stick is secured to the post, care being taken to have the second bolt hole at a different level so that it will clear the first one. The bolts can be drawn up very tightly, so as to make a firm joint. When the joint works loose it can be tightened up with a wrench in a moment's time.

Fig. 15 - A joint that can be tightened.