One-Stop CNC Machining & Surface Treatment Solutions
Stop the vendor runaround. From precision CNC machining to expert anodizing and coating, we deliver flawless, "Ready-to-Assemble" parts with guaranteed tolerance control and cosmetic excellence. Learn more about our company or contact us for detailed inquiries.
One-Stop CNC Machining & Part Surface Treatment Solutions
Stop juggling multiple vendors between the machine shop and the plating house. ProtoBatch provides integrated manufacturing and finishing services, delivering "Ready-to-Assemble" parts with guaranteed cosmetic perfection and tolerance integrity. We value your trust in our comprehensive approach.
- Cosmetic & Functional Grade: Expert Anodizing, Plating, and Powder Coating
- Precision Tolerance Control: Expert masking and calculated coating thickness
- Single-Source Accountability: Eliminating logistics delays and vendor finger-pointing
Eliminate the Multi-Vendor Headache with Integrated Finishing
Eliminate Vendor Finger-Pointing
Tired of machine shops blaming plating houses for out-of-spec parts? As your single source manufacturing partner, ProtoBatch takes 100% responsibility for the final result. We own the entire process, ensuring no excuses—just perfectly finished components.
Expert Tolerance & Masking Management
Surface treatments change dimensions. Our engineers utilize precision masking and calculate exact coating thicknesses for anodizing and plating, ensuring that threaded holes and critical mating surfaces remain within tolerance for a ready-to-assemble fit. Learn more about our anodizing finishing capabilities.
Faster Lead Times & Lean Logistics
Stop wasting weeks on third-party shipping and redundant QC inspections. By transitioning parts directly from the CNC spindle to the finishing tank, we provide a fast turnaround finishing service that slashes production timelines and reduces total landed costs.
Uncompromising Batch Consistency
Achieving color uniformity and texture across a production run requires strict chemical control. Our integrated workflow ensures batch consistency, so your 1,000th part looks and performs exactly like your first prototype, maintaining your brand's premium aesthetic.
Anodizing Mastery: The Soul of Aluminum
Standard Anodizing (Type II)
Transform aluminum components with professional Type II anodizing. We offer a full palette of color anodizing—including Black, Red, Blue, and Gold—to provide superior corrosion resistance and a premium decorative appearance for consumer electronics and industrial hardware.
Hard Coat Anodizing (Type III)
For demanding applications, our Type III hardcoat anodizing produces a dense, ultra-hard surface that excels in high-wear environments. This hard anodized coating offers exceptional abrasion resistance and electrical insulation for critical aerospace and mechanical parts.
Visual Options: Matte & Glossy
Tailor your part’s reflectivity with our specialty visual options. Combine bead blasting for a sophisticated matte anodized effect, or choose precision polishing for a high-gloss, clear anodizing finish that emphasizes the metallic luster of your custom CNC machined parts.
Texture & Prep: The Foundation of Flawless Surface Finishing
Before the final coating, the substrate must be perfect. At ProtoBatch, we utilize advanced mechanical preparation—from bead blasting to mass finishing—to eliminate CNC tool marks and ensure optimal coating adhesion. Our "Ready-to-Assemble" philosophy starts with a uniform surface texture that meets your exact Ra requirements.
Bead Blasting (Matte Finish)
Eliminate machining lines with our controlled bead blast finish. Using media ranging from #80 to #120 fine glass beads, we create a uniform, non-reflective matte surface that is the industry standard for high-end anodized components.
Directional Brushing
Achieve a premium, linear satin finish through mechanical brushing. This process creates a sophisticated metallic texture that masks fingerprints and reduces glare, making it ideal for decorative faceplates and consumer electronic housings.
Vibratory Tumbling
Our mass finishing solutions use ceramic or plastic media to efficiently deburr complex geometries. This ensures all edges are perfectly rounded and surfaces are smoothed for improved handling and mechanical longevity.
Surface Texture Control
Consistency is key in batch production. We strictly monitor media degradation and cycle times to ensure that the 1,000th part has the exact same roughness and visual appearance as the first, eliminating cosmetic rejects.
Coating services: Industrial Durability & Cosmetic Perfection
Beyond aesthetics, our coating solutions provide a high-performance shield against impact, chemicals, and UV exposure. ProtoBatch delivers "Ready-to-Assemble" parts with precise thickness control and superior adhesion. Learn more about our CNC machining services that support these finishes.
Powder Coating
A tougher-than-paint finish available in a full RAL spectrum. Ideal for corrosion-resistant enclosures and frames requiring high impact resistance and a textured or matte finish.
Spray Painting
Precision liquid PU painting for high-cosmetic parts and complex geometries. Delivers automotive-grade gloss and vibrant colors where coating thickness must be strictly managed for tolerances.
Specialty & PTFE Coatings
Advanced Teflon™ and PTFE finishes for low-friction, non-stick, and high-heat applications. Perfect for mechanical components requiring dry lubrication and chemical inertness.
Chemical Conversion & Passivation: The Invisible Shield
At ProtoBatch, we eliminate the risk of post-machining degradation by integrating advanced chemical conversion coatings into our one-stop workflow. Our passivation, Chem Film (Alodine), and Black Oxide treatments create a molecular-level barrier that prevents corrosion and ensures long-term reliability without compromising tight tolerances.
By managing these critical processes in-house, we ensure your components meet strict ASTM A967 or MIL-DTL-5541 standards, delivering "Ready-to-Assemble" parts that are protected against oxidation, salt spray, and harsh industrial environments. Learn more about our company and capabilities.
Stainless Steel Passivation
Utilizing nitric or citric acid to remove free iron from the surface, enhancing the natural chromium-oxide layer for superior rust resistance in medical and aerospace applications.
Chem Film / Alodine
A chromate conversion coating for aluminum that maintains electrical conductivity while providing an excellent primer base and protection against corrosion (MIL-DTL-5541).
Black Oxide Coating
A non-dimensional conversion finish for steel and copper that reduces light reflection, improves lubricity, and provides an aesthetic matte black anti-corrosion layer.
High-Performance Plating Services: Functional Metal Layers
Enhance component longevity and technical performance with our precision plating solutions. From high-hardness electroless nickel to conductive precious metals, we provide "Ready-to-Assemble" parts that meet rigorous salt spray and wear-resistance standards. Our services cover a wide range of plating needs.
- Electroless Nickel (ENP): Perfect uniformity for complex geometries and internal bores.
- Industrial Zinc Plating: Cost-effective corrosion barriers (Blue, Yellow, Black) for steel components.
- Precious & Hard Chrome: Gold/Silver for electrical contacts and Hard Chrome for extreme durability.
Electroless Nickel (ENP)
An auto-catalytic process delivering uniform thickness and high hardness (up to 50-70 HRC) without electricity, ensuring consistency on intricate features.
Zinc Plating Services
The industry standard for rust prevention. Ideal for steel fasteners and industrial brackets requiring reliable corrosion resistance and aesthetic finishes.
Specialty Plating
High-purity Gold and Silver for low contact resistance in electronics, and Hard Chrome for heavy-duty components requiring low friction and high wear-life.
Achieving Sub-Micron Surface Excellence: Our Polishing Services
Mirror Polishing (Ra 0.1-0.05)
Eliminate all visible tool marks and surface irregularities with our precision mirror finish polishing. We achieve a flawless, high-reflectivity surface with roughness controlled down to Ra 0.05, essential for both aesthetic luxury and technical performance.
Ideally suited for optical polish requirements, decorative consumer electronics, and high-precision molds where a "zero-defect" surface is critical for functionality and light transmission.
Electropolishing
Our specialized electropolishing for stainless steel and titanium removes microscopic peaks and valleys through an electrochemical process. This results in a burr-free, ultra-clean, and highly corrosion-resistant surface that exceeds mechanical polishing capabilities.
The preferred sanitary finish for medical devices, pharmaceutical equipment, and semiconductor components where minimizing bacterial adhesion and chemical contamination is a priority.
Vapor Polishing
Restore total transparency to machined plastic components. Our plastic vapor polishing process utilizes solvent vapors to melt and reflow the surface of Polycarbonate (PC) or Acrylic (PMMA), achieving an optical-grade clear plastic finish.
Perfect for complex internal geometries, fluid manifolds, and sight glasses where mechanical polishing is impossible but high clarity and smooth internal flow are required.
From surgical instruments to optical housings, ProtoBatch delivers world-class polishing solutions tailored to your most stringent roughness and clarity specifications. Explore all our services designed for precision finishing.
Marking and Identification: The Professional Touch
Transform raw components into "Ready-to-Assemble" products with permanent branding and traceability. From high-fidelity logos to functional serial numbers, we ensure your identity is as durable as the part itself. For precise and durable marking solutions, explore our laser marking services.
Laser Engraving & Etching
Permanent, high-contrast laser marking for serial numbers and QR codes. Ideal for metals and plastics where non-fading traceability and extreme precision are required.
Silk Screen Printing
The industry standard for multi-color branding on flat surfaces. Perfect for high-visibility control panels, interface housings, and large-scale decorative graphics.
Precision Pad Printing
Seamlessly transfer intricate imagery onto 3D geometries and irregular surfaces. Essential for ergonomic grips, curved enclosures, and complex industrial components.
Surface Quality Control: Verified, Not Just Viewed
100% Cosmetic Inspection
Full-batch visual audits ensure a flawless cosmetic surface finish, eliminating color variance and surface defects before delivery.
Thickness Verification
Using digital gauges, we perform precise coating thickness measurement to guarantee strict adherence to tolerance management.
Adhesion Testing
Standardized cross-hatch paint adhesion testing ensures your functional coatings never peel or chip under industrial stress.
Salt Spray Test
Our lab conducts salt spray testing to validate long-term corrosion resistance for aerospace and marine application environments. Our commitment to quality assurance ensures top performance.
Industry Applications and insights into industry innovations
>Aerospace
High-performance finishing for flight-critical parts, featuring Hard Anodizing (Type III) and Alodine coatings for extreme durability and corrosion resistance.
Medical
Biocompatible surface treatments including citric acid passivation for 316L stainless steel and electropolishing for high-precision surgical instruments.
Automotive
Durable solutions from textured powder coating for structural brackets to precision zinc plating for fasteners, ensuring long-term salt spray resistance.
Electronics
Aesthetic and functional finishes for housings and connectors, providing gold plating for conductivity and specialized EMI/RFI shielding protection.
Surface Finishing Gallery: From Raw Machining to Ready-to-Assemble
Eliminate the gap between "As-Machined" and "Finished Product." Explore the tangible difference ProtoBatch delivers through integrated CNC surface finishing, including professional color anodizing finishing and other techniques, ensuring cosmetic excellence and functional durability in every part.
As-Machined Aluminum
Raw aluminum components showing standard CNC tool marks, sharp burrs, and initial surface imperfections before post-processing.
Professional Color Anodizing
A uniform, corrosion-resistant Type II anodized finish that eliminates tool marks and delivers a high-end cosmetic appearance.
Bead Blasted Cast Metal
Cast metal part after bead blasting, showing a uniform matte surface, reduced surface roughness, and no visible tooling marks.