Assembly and finishing techniques

Assembly and finishing techniques

Assembly Techniques


  • Fastening is the act of joining parts together by means such as nails, screws, or glue. It also includes using clips or staples, mainly used in furniture and construction.
  • Mechanical fasteners are used to temporarily join or detach components, such as nuts, screws, and bolts.


  • Pinning involves inserting a pin into two or more pieces to bind them securely. This can help create permanent or semi-permanent bonds.


  • Riveting involves driving a metal pin or bolt through items to join them.
  • This process provides a strong joint that is resistant to loosening and can bear a significant amount of load.


  • Adhesives can bond materials, such as paper, plastic, wood, metal, and glass.
  • Adhesives can be applied in various ways, including coating, spraying, or brushing onto the surface.


  • Soldering is a method of joining metal pieces by melting a filler metal into the joint.
  • Brazing is similar to soldering but at higher temperatures, creating strong joints in metal parts.

Finishing Techniques


  • Grinding smooths the edges of a product and removes any small pieces of material remaining after assembly.


  • Painting protects the surface, adds colour or design, and impacts the product’s overall aesthetics.
  • Different techniques can be used, including spray painting, powder coating, and electrocoat or e-coat.


  • Polishing involves refining a surface to a smooth or mirror-like condition.
  • This could be done using a range of abrasives, chemical polishes, or buffing wheels.


  • In plating, a thin layer of metal is deposited onto the surface of an object. This improves appearance, corrosion resistance, and wear resistance.
  • Types of Plating include electroplating, electroless plating and immersion plating.


  • Lacquering forms a protective coating on the product that is often glossy and prevents oxidation, wear, and adds aesthetics.


  • Sandblasting is a method of cleaning or roughening a surface by blasting it with sand.
  • This method can also be used to impart a texture or design onto the surface of a product.

Quality Control

Inspection and Testing

  • Inspection involves examining the finished product to ensure it meets the desired specifications and quality standards.
  • Testing could be mechanical, electrical, or environmental, to ensure the product can withstand conditions it might be exposed to in its functional life.

Record Keeping

  • Good record keeping is crucial for tracing issues, demonstrating responsibility, and improving future processes.
  • This includes information about each step in the assembly and finishing process, the materials used, test results, and any issues or adjustments made.

Feedback and Improvement

  • In a well-functioning operation, there should be a continuous loop for feedback and improvement.
  • This includes seeking feedback from various sources, analysing problem areas to root causes, then implementing this feedback to improve the processes.