Yes, applying a #180 grit sandblasted and anodized finish to CNC machined aluminum parts is a very common and highly effective manufacturing process. This multi-step procedure is ideal for achieving a high-quality, uniform appearance.

The workflow begins after the part is machined via CNC. The part then undergoes sandblasting with #180 grit abrasive media. This critical pre-treatment step removes the fine tool marks left by the machining process and creates a consistent, non-directional, fine-textured matte surface. Following this preparation, the part is anodized. This electrochemical process develops a hard, durable, and corrosion-resistant oxide layer on the aluminum surface, which can also be dyed to achieve various colors for a premium decorative look.

Pros and Cons of the Process

• Pros: This finish provides a premium, non-reflective matte aesthetic that effectively conceals minor surface flaws and machining lines. The anodized layer significantly boosts surface hardness, as well as resistance to wear and corrosion.
• Cons: As a multi-step process, it increases the overall cost and lead time of production. The sandblasting action can slightly round sharp edges and may cause minor dimensional changes, which must be factored into the design for parts with critical tolerances.

How We Do It

We start by analyzing the core of your technical question—the compatibility of CNC machining with a specific surface finish. We then research and outline the standard industrial process flow to ensure the sequence and purpose of each step are described accurately. The information is then structured to provide a direct answer first, followed by a balanced analysis of its advantages and disadvantages for a complete perspective.

Expected Results

This approach provides you with a rapid and clear confirmation of the process’s viability. It equips you with the essential information on aesthetics, durability, and key manufacturing trade-offs. This enables you to make informed design decisions and communicate precise requirements for your project, ensuring the final product meets your expectations.