Additive Inn

Color Application & Finishing

Sand, primer, spray, electroplate, airbrush, and clear coat — production-grade finishing that takes 3D-printed parts from "obviously printed" to "looks like a real product."

Color Application & Finishing

Capabilities

  • Sanding and primer prep
  • Pantone-matched spray paint
  • Electroplating (chrome, gold, copper, brass)
  • Airbrush detailing and weathering
  • Clear coat (matte, satin, gloss)
  • UV-cured topcoats for outdoor durability

How we make it

  1. 01

    Surface prep

    Wet-sand layer lines and seam marks. Mask off the parts that should stay raw. Skipping this step is why most printed parts still look printed.

  2. 02

    Primer fill

    Filler primer in a downdraft booth, sanded back to 600 grit. The substrate is invisible by the time we move on to colour.

  3. 03

    Base coat

    Pantone-matched spray or 2-pack auto paint, depending on durability needs. Even tone, no orange peel, no runs.

  4. 04

    Detail & weathering

    Airbrush gradients, panel-lining, micro highlights, weathering — the difference between a toy and a hero unit.

  5. 05

    Clear coat

    Matte, satin, or gloss clear locks the colour and adds UV protection. Hand-polished where the surface needs to look wet.

A printed part fresh off the bed looks printed. Finishing is what makes it look like a product. It’s also where most studios cut corners — and where we don’t.

What’s available

  • Spray painting — Pantone matching for brand-accurate colour. Two-pack automotive paint for parts that need durability.
  • Electroplating — chrome, copper, gold, brass finishes that look (and feel) like real metal. Requires specific surface prep on the printed master.
  • Airbrushing — fine gradients, weathering, panel-lining for scale models and figurines.
  • Clear coats — matte, satin, or gloss to lock in the underlying paint and add UV resistance for outdoor pieces.

Process by material

  • FDM (PLA, PETG, ABS) — fill layer lines with primer-filler, sand to 600 grit, then paint.
  • SLA / DLP resin — already smooth; primer once, paint twice.
  • SLS nylon — porous; needs sealer before paint takes evenly.

Common pairings

  • Trophies and awards — electroplated chrome or gold over a 3D-printed master is the workhorse finish for premium presentation.
  • Scale models — airbrushed gradients and weathering, sealed with matte clear.
  • Product mockups — Pantone-matched spray with satin clear, looks like an injection-molded prototype.
  • Outdoor signage and props — UV-cured topcoat to survive Singapore sun.

Send the part (or print it with us) and tell us the desired finish. We’ll quote per part with no minimum order.

Instant quote