Surface Finishing Services for Custom Parts
Anodizing, powder coating, plating, polishing, blasting, painting and marking for metal and plastic components.
Need the Right Finish Without Quality Surprises?
Selecting the wrong finish can lead to assembly failures, cosmetic rejections, and delayed timelines. We help you eliminate these risks.
Avoid Color Mismatch
Prevent color variation between batches by establishing strict RAL/Pantone standards and limit samples before production.
Improve Corrosion Resistance
Ensure your parts withstand salt spray, moisture, and harsh environments with the correct plating or coating thickness.
Protect Cosmetic Surfaces
Define A, B, and C surfaces on your drawings to guarantee visible areas are flawless and free from tool marks.
Meet Functional Requirements
Maintain critical tolerances, electrical conductivity, or wear resistance by selecting finishes that match engineering specs.
Reduce Supplier Coordination
Get machining, fabrication, and finishing all under one roof, eliminating the blame game between multiple vendors.
Prevent Coating Defects
Identify risks like sharp edge buildup, thread clogging, or masking failures during the DFM review stage.
Choose the Right Surface Finish for Your Application
Match your part's operational environment and cosmetic needs with the optimal finishing process.
For Corrosion Resistance
- Anodizing
- Powder Coating
- Zinc Plating
- Chromate Conversion
- Electroless Nickel
For Cosmetic Appearance
- Bead Blasting
- Brushing
- Polishing
- Painting
- Color Anodizing
For Wear Resistance
- Hard Anodizing
- Electroless Nickel
- Black Oxide
- PVD Coating
For Electrical Conductivity
- Chem Film
- Tin Plating
- Nickel Plating
- Gold Plating
For Outdoor Use
- Powder Coating
- Anodizing
- E-Coating
- Zinc-Nickel Plating
Comprehensive Surface Finishing Processes
From protective coatings to cosmetic finishes, explore our full range of capabilities.
Anodizing
- Clear anodizing
- Black anodizing
- Color anodizing
- Hard anodizing
- Best for aluminum parts
Powder Coating
- RAL color matching
- Durable outdoor coating
- Good for sheet metal, die cast and welded assemblies
Plating
- Zinc plating
- Nickel plating
- Electroless nickel
- Chrome plating
- Tin plating
Conversion Coating
- Chem film
- Chromate conversion
- Phosphate coating
- Passivation
Mechanical Finishing
- Bead blasting
- Sand blasting
- Brushing
- Polishing
- Deburring
Painting & Marking
- Wet painting
- Silk screen
- Laser marking
- Pad printing
Which Finishes Work Best With Your Material?
Ensure compatibility between your base material and the chosen surface treatment.
| Base Material | Recommended Surface Finishes |
|---|---|
| Aluminum | Anodizing, hard anodizing, chem film, powder coating, bead blasting |
| Stainless Steel | Passivation, polishing, brushing, electropolishing, laser marking |
| Carbon Steel | Zinc plating, black oxide, phosphate coating, powder coating, painting |
| Brass / Copper | Nickel plating, tin plating, polishing, clear coating |
| Zinc Die Casting | Powder coating, painting, plating, chromate coating |
| Plastic Parts | Painting, silk screen, pad printing, laser marking |
Important Note: Not all finishes work equally well on all materials. LK Tools helps review material, appearance and functional requirements before production.
Avoid Common Surface Finish Problems
Know the risks before you approve the drawing.
Die Cast Anodizing Risk
Die cast aluminum usually does not anodize as consistently as machined aluminum due to silicon content.
Color Variation
Anodizing color may vary between batches, alloys, and surface textures. We help establish acceptable limit samples.
Masking Requirements
Threads, precise holes, and electrical contact surfaces may need specific masking callouts before coating.
Cosmetic Surface Defects
Tool marks, deep scratches, and welding marks can show through finishing. Proper pre-treatment is critical.
Thickness Build-Up
Coatings add material. They may affect tight tolerance areas, dowel holes, and fine threads if not accounted for.
Outdoor Durability
Finish selection must match UV exposure, salt spray hours, and environmental requirements to prevent peeling.
See Common Finish Options
Visual examples of our surface finishing capabilities on real parts.
Clear Anodized
Black Anodized
Bead Blasted
Brushed Stainless
Polished Stainless
Powder Coated
Zinc Plated
Electroless Nickel
Painted Plastic
Laser Marked
Finish Quality You Can Verify
We don't just apply a finish; we verify it meets your specifications before shipping.
Design Tips for Better Surface Finishing
- Add clear masking notes on drawings for threads and contact points.
- Define cosmetic and non-cosmetic surfaces (A/B/C surfaces).
- Specify color standards such as RAL or Pantone.
- Consider coating thickness in critical dimensions and tight tolerances.
- Avoid sharp edges before coating to prevent edge buildup or chipping.
- Use consistent material batches for cosmetic parts to ensure uniform color.
- Always confirm physical samples before mass production.
Finishing Support Across Manufacturing Processes
We integrate surface finishing seamlessly with our core manufacturing services.
CNC Machined Parts
Anodizing, hard anodizing, passivation, black oxide, electroless nickel.
Sheet Metal Parts
Powder coating, painting, zinc plating, silk screen, hardware masking.
Die Cast Parts
Powder coating, painting, plating, chromate coating.
Aluminum Extrusions
Clear anodizing, black anodizing, brushing, powder coating.
Injection Molded Parts
Painting, pad printing, silk screen, laser marking.
Success Stories in Surface Finishing
Sheet Metal Enclosure
Challenge: Customer needed consistent black texture finish for highly visible front panels without dust inclusions.
Solution: Provided RAL color approval sample panels before mass production to lock in texture expectations.
Result: Eliminated color rejection risk and ensured assembly uniformity.
CNC Aluminum Part
Challenge: Cosmetic surface had visible CNC machining tool marks that showed through the clear anodizing.
Solution: Added a fine bead blasting step before anodizing to homogenize the surface texture.
Result: Achieved a premium, uniform matte appearance suitable for consumer electronics.
Steel Bracket
Challenge: Required high outdoor corrosion resistance for structural brackets without adding excessive cost.
Solution: Applied zinc plating with clear chromate and implemented strict coating thickness inspection.
Result: Improved durability for field use while maintaining budget targets.
One Supplier for Manufacturing + Finishing
Stop managing multiple vendors. We handle the entire process from raw material to finished, packaged parts delivered to your door.
- CNC machining + finishing
- Sheet metal + powder coating
- Die casting + finishing
- Injection molding + painting
- Assembly + packaging
- Finish sample approval support
- US sales support
- DDP global shipping
Surface Finishing FAQ & Selection Guide
Get answers to the most common questions about anodizing, powder coating, plating, corrosion resistance and cosmetic finishes.
Quick Selection Guide
Need Corrosion Resistance?
Anodizing
Need Cosmetic Appearance?
Powder Coating
Need Electrical Conductivity?
Chem Film
Need Wear Resistance?
Hard Anodizing
Need Outdoor Durability?
Powder Coating
Need Expert Advice?
Upload Drawings to Receive:
- Finish Recommendation
- Material Compatibility
- Color Matching Advice
- Cost Optimization
Need the Right Finish for Your Custom Parts?
Upload your drawings and finishing requirements. Our team will review material, function, cosmetic expectations, and cost before production.