jointings

Jointing is the process of creating or preparing joints—interfaces where two pieces meet—so they can be connected, sealed, or allowed to move relative to one another. The term is used across trades such as carpentry, masonry, metal fabrication, and geology, and the specifics vary by discipline.

In woodworking, jointing typically refers to flattening and squaring edges and faces so pieces can be accurately assembled. Edge jointing uses a jointer to produce straight, square edges; face jointing flattens a surface. Proper jointing is often a prerequisite for gluing boards into wide panels and for ensuring square assemblies. Techniques must consider grain direction, tear-out, and thickness.

In masonry and stonework, jointing describes forming and finishing mortar joints between units; the joint finish affects weather resistance and appearance. In concrete construction, jointing refers to forming contraction or control joints to manage cracking, typically by grooving or saw-cutting the concrete, and to the specific shapes of mortar joints.

In metalworking and fabrication, jointing denotes the process of joining parts together through welding, brazing, soldering, bolting, or adhesive bonding, including preparation of mating surfaces and fit-up.

In geology, jointing is the natural development of fractures within rock, known as joints, which influence strength, permeability, and the behavior of structures built on or within the rock.

Common topics related to jointing include edge jointing, mortar joints, control joints, and weld joints.