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Machine Shops

Metal Finishing Solutions for Machine Shops

Highest Level of Precision for Critical Industry Needs

Machining is a form of component manufacturing, often through the subtraction of material. The machining process uses a variety of heavy machinery to alter a component’s dimensions, however this process can often leave components with abrasions, surface impurities, or other imperfections that can be detrimental to their functionality. Fortunately, these complications can be avoided through proper surface finishing techniques and post-treatments. 

Since 1975, AOTCO has been providing rapid turnarounds, clear communication, and consistent quality finishing solutions for our clients in the machining industry. We pride ourselves on the lasting relationships we form with our machine shop partners and our ability to finish a wide variety of substrates - including exotic and non-metal alloys.

Our expertise in multi-material finishing and plating parts with unique and complex geometries allows design engineers to create a variety of highly specialized tools, devices, and components for our clients in the machining industry.


Finishing Machine Shop Components and Delivering Results

Since 1975, machine shops across the United States have relied on AOTCO to ensure quality surface finishing and peak performance. NADCAP accredited and ITAR certified, AOTCO brings decades of experience plating and anodizing for advanced manufacturers and machine shops.

AOTCO provides quality surface finishing for machine shops in the following industries:

  • Aerospace
  • Defense and Military
  • Clean Energy
  • Electrical / Electronics
  • Telecommunications
  • Semiconductors
  • Optical
  • And many, many more!

High Quality Services

AOTCO delivers the benefits of a complete range of Anodizing capabilities, a very broad range of Plating processes and a suite of additional complimentary surface finishes.


  • Type 1 Anodize (Chromic Acid)
  • Type 2 Anodize (Sulfuric Acid)
  • Type 3 Anodize (Hardcoat)
  • Hardcoat Anodize with Teflon Impregnation
  • Color Anodize (Black & dozens of colors)
  • Titanium Anodize
  • Beryllium Anodize


  • 20+ Plating Processes, including Common and Precious Metals
  • Electrolytic Nickel Plating
  • Electroless Nickel Plating (High Phosphorus Included)
  • 25+ Common and Exotic Substates
  • 60+ Finishing Specs

And More

  • Chem Films & Conversion Coatings
  • Passivation
  • Electropolishing
  • Masking
  • Pre-Treatments
  • Post-Treatments

In-house Expertise

AOTCO’s wide range of surface finishing competencies are bolstered by AOTCO Labs, our in-house problem-solving team of engineers. This group brings decades of finishing skills and know-how to help customers to develop solutions for new products.

Having worked with machine shops since our foundation, AOTCO Labs understands that there is rarely a one size fits all solution for certain components and materials and is ready to provide your team with quick and quality finishing solutions.

Have a new project or need to workshop a current one? Contact AOTCO Labs today for same-day customer service.


Finishing Goals for Machine Shop Applications

  • Corrosion Protection
  • Solderability
  • Thermal Conductivity and Resistance
  • Electrical Conductivity and Resistance
  • Aesthetic/Color Coding
  • Durability
  • Wear & Abrasion resistance
  • Lubricity

Why Do Machine Shops Trust AOTCO?

  • Rapid Turnarounds
  • Multi-Material Finishing
  • Unusual Combinations
  • Low Volume - High Mix
  • Exotic Materials
  • Complex Geometries
  • Production Scaling (high volume)
  • Dedicated Capacity (high volume)
  • Working Collaboratively with Your Team to Invent Solutions for New Products

Request a Quote

Whether you are an engineer creating a new part or a buyer looking for a NADCAP-qualified vendor to help turn your engineer’s specs into reality, AOTCO is ready to deliver the highest quality surface finishing to your most demanding needs. Click the link below to start the conversation.


Request a Quote