Adhesives, Mechanical, Heat, Jointing

Adhesives

Adhesives are substances used to bond or stick materials together.
They work by chemically reacting with the surface of the material, creating a bond that locks the two surfaces together.
Different types of adhesives include epoxy resins, polyurethane, cyanoacrylates, and PVA glue, each suited for different types of materials and conditions.
The application of adhesive can be influenced by the surface area, pressure applied, temperature, and the curing time.

Mechanical joining involves the use of techniques and devices such as screws, bolts, rivets, and clips to join materials together.
This method of joining is often used when a strong, reliable bond is required that can also be dismantled if necessary.
The choice of mechanical join will be dictated by the material, required strength of the bond, convenience and aesthetics.
Mechanical joints can be categorized into non-permanent (e.g., screws and bolts) and permanent (e.g., rivets and welding).

Heat joining involves using heat to join or bond materials together.
Welding and Brazing are examples of heat joining. In welding, the materials being joined are melted and fused together, whereas in brazing, a filler material is melted and used to bond the materials.
This method of joining is used frequently in the construction of metal structures.
Heat joining processes usually require a power source, a filler material and protection (shield) from oxidation, such as flux or a gas shield.

Jointing refers to the technique of joining materials together at their ends or edges.
There are several types of joints, including dovetail joints, mortise and tenon joints, biscuit joints, and miter joints.
Joints can be used to increased strength, improved functionality or enhanced aesthetic of the final product.
The type of joint used will be determined by factors such as the materials being used, the purpose of the joint, and the tools and skills available.