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Surface Finishing Services

3ERP offers one-stop solutions for custom parts and surface finishing services.

15+ surface finishing options compatible with most manufacturing processes such as CNC machining, injection molding, sheet metal fabrication, 3D printing, and urethane casting.

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PMMA/Acrylic-like Resins
  • Response within 10 hours
  • Secure file upload
  • Delivery in as fast as 5 days
Iso

ISO

9001:2015 Certified
Mat Sheet

+

Sheet metal materials
Tolerence Sheet

±0.1 mm

Tolerance achievable
Fast Timing

5-day

Fast lead time

Basic Finishes

Standard or minimal surface treatments used to clean, smooth, or prepare parts for further finishing.

As Machined

Standard finish (3.2 μm / 125 μin Ra); parts are cleaned and deburred, with no additional surface finishes applied.
Machining marks
Visible, minor surface scratches
Services
CNC machining, Sheet metal fabrication
Applicable Materials
Metals, Plastics

Sanding

Sanding uses abrasives to remove imperfections, smooth edges, and prepare surfaces for finishing.
Machining marks
Reduced but visible
Services
CNC machining
Applicable Materials
Metals, Plastics, Wood

Polishing

Polishing uses abrasives or compounds to reduce roughness and create a smooth, reflective appearance.
Machining marks
Glossy or mirror-like finish
Services
CNC machining
Applicable Materials
Metals, Plastics

Surface Texturing

Abrasive blasting processes that remove surface contaminants and create uniform, textured finishes.

Sand Blasting

Using compressed air to blast abrasive media effectively removes rust, scale, and surface contaminants.
Machining marks
Uniform roughness, slightly abrasive feel
Services
CNC machining, Sheet metal fabrication
Applicable Materials
Metals, Plastics, Glass, Ceramics

Bead Blasting

Small glass beads or abrasive materials blast surfaces at high pressure, ensuring gentle cleaning and a uniform finish.
Machining marks
Matte or satin surface
Services
CNC machining, Sheet metal fabrication
Applicable Materials
Metals, Plastics, Glass, Ceramics

Coating & Painting

Protective or decorative layers are applied to the parts to enhance durability, corrosion resistance, or appearance.

Powder Coating

A dry powder is electrostatically applied and cured under heat to form a durable, uniform, and colored finish.
Machining marks
Removed
Services
CNC machining, Sheet metal fabrication, Injection molding
Applicable Materials
Metals, some heat-resistant plastics

Painting

Painting applies liquid coatings to material surfaces for protection, aesthetics, or functional finishes.
Machining marks
Partially visible
Services
CNC machining, Sheet metal fabrication, Injection molding, 3D printing
Applicable Materials
Metals, Plastics, Wood, Composites

E-Coating

E-Coating uses an electrically charged bath to deposit a uniform, corrosion-resistant paint layer onto metal surfaces.
Machining marks
Hidden
Services
CNC machining, Sheet metal fabrication
Applicable Materials
Steel, Aluminum, Zinc, Cast Iron

Electroplated & Metal Coatings

Metallic coatings are deposited via electroplating to resist rust and improve aesthetic appeal.

Electroplating

Electroplating deposits a metal coating onto a conductive surface using an electric current. Commonly used metals include nickel, zinc, and chrome.
Machining marks
Partially hidden
Services
CNC machining, Sheet metal fabrication
Applicable Materials
Metals

Zinc Plating

Also known as electrogalvanizing, this process applies a thin zinc layer via electroplating to prevent corrosion and enhance appearance.
Machining marks
Partially hidden
Services
CNC machining, Electroplating
Applicable Materials
Steel, Iron, Brass

Nickel Plating

Nickel plating deposits a thin layer of nickel onto metal surfaces. Available as electrolytic or electroless plating.
Machining marks
Partially hidden
Services
CNC machining, Sheet metal fabrication
Applicable Materials
Steel, Copper, Brass, Aluminum

Chemical Treatments

Chemical surface treatments that modify metal surfaces for enhanced corrosion resistance and performance.

Anodizing

Anodizing thickens the metal’s oxide layer, enhancing corrosion resistance and enabling optional coloring. Types 1, 2, and 3, along with Chemical Film/Alodine.
Machining marks
Visible
Services
CNC machining, Sheet metal fabrication
Applicable Materials
Aluminum, Titanium

Passivation

Chemically removes free iron and contaminants from metal surfaces, enhancing corrosion resistance.
Machining marks
Visible
Services
CNC machining, Sheet metal fabrication
Applicable Materials
Stainless Steel, Other Corrosion-resistant Alloys

Chromate Conversion Coating

A chemical surface treatment for aluminum and magnesium alloys that improves corrosion resistance and paint adhesion.
Machining marks
Visible
Services
CNC machining, Sheet metal fabrication
Applicable Materials
Aluminum, Magnesium alloys

Black Oxide Coating

Creates a thin black oxide layer on ferrous metals to enhance corrosion resistance and prevent oxidation.
Machining marks
Visible
Services
CNC machining, Sheet metal fabrication
Applicable Materials
Steel, Iron

Put your parts into production today

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Supports:
  • STEP
  • STP
  • SLDPRT
  • IPT
  • PRT
  • SAT
  • IGES
  • IGS
  • CATPART
  • X_T
  • OBJ
  • STL
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USA
4991 Wet Geospace dr., STE 209, Independence, MO 64056, USA
China
GangKou, ZhongShan City, GuangDong Province, China
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