ROUTES
20+
Publicly visible finishing routes across Unionfab service pages for customers who need more than a raw manufactured part.
SURFACE FINISHES WE OFFER
From Raw Surfaces toPremium Finishes.One Partner. Every Process.
Improve appearance, protection, and usability without splitting manufacturing and surface treatment across different suppliers.
20+ Finishing Routes3D Printing, CNC Machining
Precision Metal Polishing
Matte Resin Treatment
Black Dyeing Treatment
Resin Spray FinishSurface requirements Quality match
One standard solution for texture refinement, custom coloring, and protective plating.
Excellent4.7 out of 5
WORKFLOW
1 Order
Select material and finish in the same quoting and ordering flow.
COVERAGE
Multi-Process
Finishing support is shown alongside 3D printing, CNC machining, and injection molding workflows.
PROOF
4.7 / 5
Public review score adds trust for customers placing cosmetic or customer-facing part orders.
Various Surface Treatment Services
We provide professional surface treatment services, covering sanding, spraying, electroplating, polishing, oxidation and other processes to ensure that 3D printed products achieve the ideal appearance and performance. Whether it is to improve wear resistance, enhance corrosion resistance, or achieve personalized visual effects, we can provide customized solutions to make your products more quality!
Painting/Color Matching
Painting
Oil injection process is a common surface treatment method, mainly used to improve the appearance, touch and durability of products, widely used in electronic products, auto parts, home appliances, hardware products, plastic parts and other fields.
Case
Metal Color Card
Plastic Color Card
Template Oil
Electroplating/Anodizing
Electroplating
Electroplating is a surface treatment process in which a metal or alloy film is plated on a metal or non-metal surface using the principle of electrolysis. It can enhance the corrosion resistance of the material, improve the hardness, increase the beauty and conductivity. The electroplating process involves the metal product as the cathode and the coated metal as the anode, which is electrified in the electrolyte, so that the anode metal is dissolved and deposited on the cathode surface to form a uniform coating.
Case
Electroplated Shoe Mold
Electroplating Parts
Part Oxidation
Laser Engraving/Silk Screen
Laser Engraving
Laser engraving, also known as laser engraving, is the use of high energy laser beam on the surface of the material to etch patterns, text, by changing the color of the material surface or removing part of the material to form a contrast effect, suitable for metal, plastic and other materials.
Case
Radium Engraving
Radium Carving
Silk Screen Pattern
Chemical Finishing
Passivation
Passivation is mainly used to improve the corrosion resistance of metals (especially stainless steel, aluminum, titanium, etc.) by chemical methods to remove free iron and pollutants on the surface of the material, while forming a dense protective oxide film to prevent further oxidation and corrosion.
Case
Passivation Contrast
Passivation of Stainless Steel
Vapor Smoothing
Leather Case/Leather
Leather Holster
Leather finishes are widely used in modern CMF (Color, Material, Finish) design and are typically divided into genuine and synthetic leather. Synthetic leather is made from woven or non-woven fabric with a polyurethane coating and special foaming treatment, creating a soft-touch surface similar to real leather. It is commonly used in premium electronics, automotive interiors, and aircraft cabins.
Case
Flat Skin
Leather Casing
Leather Cutting
Hardware That Changes the Standard
Most finishing services rely on manual polishing and spray painting. Unionfab runs two of the most advanced post-processing platforms in the industry — delivering repeatability and surface quality that manual processes cannot match at any scale.
• DyeMansion
PolyShot + DyeColor System
For SLS/MJF Nylon: PA12 · PA11 · PP · TPU
DyeMansion's industrial post-processing platform is the de facto standard for premium SLS and MJF nylon surfaces. The PolyShot Surfacing system (PSS) uniformly de-powders and smooths nylon parts through controlled micro-blasting — improving mechanical properties while eliminating the inconsistency of manual sanding. DyeColor then delivers deep, uniform color penetration using industrial dyes with Pantone matching, giving each part a consistent, fade-resistant finish.
PolyShot Surfacing (PSS)
Automated surface smoothing — reduces Ra by up to 70%. Improves tensile strength by ~10% while uniformly removing powder residue from all surfaces including internal channels.
DyeColor Industrial Dyeing
Deep-penetration dye system achieving color depths of 0.2-0.5 mm. Consistent batch color across all parts. Pantone / RAL cross-reference support. No surface cracking or peeling.
Supported Materials
PA12 (Nylon 12), PA11 (Nylon 11), TPU, PP, and select PA-CF composites from SLS and MJF platforms.
Effect
• AMT PostPro
Vapor Smoothing System
For Nylon & Resin: PA12 · PA11 · TPU · SLA/DLP
AMT's PostPro chemical vapor smoothing system applies a controlled solvent vapor to the part surface, re-flowing and sealing the top 20–30 µm of material. The result is an injection-moulding-like surface finish achieved automatically, consistently, and without dimensional distortion — a level of quality impossible to achieve manually at scale. Parts emerge sealed, waterproof, and with improved mechanical properties.
Surface Roughness Ra < 1 um
Achieves injection-moulding-comparable surface quality on 3D printed nylon and resin parts. Typical improvement from Ra 10-15 um (as-printed) down to Ra 0.5-0.9 um.
Sealed Porosity & Improved Strength
Seals micro-pores and surface voids — improves waterproofing, chemical resistance, and tensile strength by 10-15%. Parts can be used in fluid-contact and outdoor applications after treatment.
Supported Materials
PA12, PA11, TPU, PETG, ASA from SLS/FDM platforms; SLA and DLP resin grades including rigid and tough formulations.
Effect
Unionfab Supported Spraying Services
Unionfab offers a variety of surface treatment services that can be customized to meet your product design needs.
Plastics
Metals
FAQs about Finishing Order
Start from the outcome you need: appearance, protection, or function. Then narrow the finish by material and route.
It can. The current service page notes that custom finishes may affect lead time and additional fees.
No. Some finishing routes are selected for protection, identification, or other performance-related reasons.
Yes. Unionfab’s public workflow already places material and finish selection inside the same ordering path.
Unionfab is China's Largest 3D Printing Manufacturing Company for Rapid Prototyping and On-Demand Production Parts.
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沪ICP备17023219号-3Region: -, Version: 26.09.01
沪ICP备17023219号-3Region: -, Version: 26.09.01
