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3D printing surface treatment

3D printing surface treatment is an essential post-processing step that enhances the appearance, functionality, and durability of printed parts. While 3D printing allows for rapid prototyping and complex geometry production, printed objects often have visible layer lines, rough textures, or other surface imperfections that need to be improved depending on their final use. Surface treatment helps achieve smoother finishes, tighter tolerances, improved aesthetics, and better mechanical or chemical resistance.

There are various surface treatment techniques, each suited to different materials and printing methods. For plastic parts, sanding, polishing, vapor smoothing (commonly with ABS), and priming are common to achieve a sleek, professional appearance. In SLA prints, UV curing and light polishing can enhance clarity and detail. For metal 3D prints, treatments such as bead blasting, tumbling, electroplating, and anodizing are used to remove residues, reduce surface roughness, and add corrosion resistance or decorative finishes.

Painting, dyeing, and coating can also be applied to add color or functional layers such as water resistance or electrical conductivity. Each surface treatment method is selected based on the material type, desired finish, and end-use application. By refining surface quality, 3D printing surface treatments greatly expand the usability of printed parts in both prototyping and production-grade scenarios.

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Firstmold has a global sales network, covering over 30 countries and regions including the US, Canada, the UK, and France, etc. We have strong partnerships with logistics companies and are trusted for our excellent after-sales service. We are committed to providing global customers with the best possible experience