Bead Blasting in CNC Machining(rivet vs April)

The field of manufacturing has seen significant advances over the past few years, thanks largely to technology and automation. Innovative techniques like Computer Numerically Controlled (CNC) machining have revolutionized production processes across numerous industries. One notable aspect within CNC machining often overlooked is bead blasting – an effective finishing method we shall delve deeper into this article.

Bead blasting is a surface treatment process used mainly for three purposes; removing surface deposits, achieving desired aesthetic finishes, and enhancing mechanical properties like hardness and wear resistance. In a nutshell, it involves shooting small glass beads at high pressure towards a product’s surface using specialized machinery.

Typically seen as part of CNC machining workflows, bead blasting plays key roles in producing high-quality and diverse products. It provides an efficient method for refining surfaces and eliminating imperfections that may hamper products’ functionality or appeal. So, how does bead blasting fit into the CNC machining process?

Integration of Bead Blasting into CNC Machining

Essentially, CNC machines automate complex cutting tasks on hard materials like steel, aluminium or plastic, depending on programmed directions and numerical inputs defined via computer programming. What sets CNC machines apart from conventional ones is their ability to run without constant guidance from operators, increasing efficiency and reducing error margin.

After initial cuts and shapes are achieved by the machine, bead blasting comes in during post-machining treatments, playing an instrumental role in ensuring remarkable surface quality. Some top tier manufacturers use automated machines with controlled environments specifically designed for bead blasting within the CNC workflow.

Stages Involved in Bead Blasting Process

1. Pre-treatment: Depending on material type and end-product requirements, certain pre-treatments might be necessary, which include cleaning or degreasing the surface, applying heat, etc.

2. Positioning: The parts requiring bead blasting are carefully placed inside the blast cabinet while ensuring all openings are sealed to avoid bead spillage.

3. Bead Projection: The blast gun is then used at a specified pressure for projection of beads, based on required surface finish and texture.

4. Cleaning: Post blasting, the parts are cleaned to remove residual blasting media or small debris that might be sticking onto the surface.


Apart from providing a smoother and aesthetically pleasing final finish, it also cleanses surfaces from rust, scale, or other contaminants. It helps in revealing any potential defects or weaknesses overlooked during initial machining processes by improving visibility; thus, ensuring product quality. Importantly, it enhances adhesion properties when coatings or paint need to be applied post-blasting.

Safety Measures

However, considering the process’s intensity, safety measures should never be compromised. Always make use of personal protective equipment (PPE) including gloves, face shields or goggles, aprons and dust masks suitable for blocking fine particulates.
rivet vs

Closing Thoughts

Bead blasting as part of CNC machining showcases how diverse operations can integrate seamlessly into one automated production cycle, delivering superior results consistently. This indispensable method not only refines visual appearance but also extends product lifespan by enhancing surfaces at micro levels which might otherwise become catalysts for fatigue or corrosion. Therefore, next time you marvel at an impeccably finished machinery part or gadget, remember there is more to its glimmer and sheen than what meets the eye – meticulous precision through techniques like bead blasting!

Want.Net Technical Team

Want.Net Technical Team

The Want.Net Technical Team has diverse members with extensive education and training in CNC machining. They prioritize precision, efficiency, and innovation to provide high-quality manufacturing solutions globally.

Push Your Order into Production Today!

Table of Contents


You’re one step from the  factory-direct price of part manufacturing services.