In many self-made furniture in a home workshop, it is worth using wedge-shaped connections of vertical and horizontal elements. Such connections are not only easy to dismantle, but they also allow erasing (by driving the wedge deeper) slack resulting from shrinkage of the wood or loosening of the joint. The method of constructing a simple shelf with the use of just such a connection with two wedges is very simple. Wedges inserted into the openings connect the shelves with the side wall.