Vapour Smoothing

In a first for Australasia, fi innovations brings you vapour smoothing technology for 3D-printed polymer parts, with AMT's PostPro3D machine achieving a surface finish comparable to injection moulding.

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Chemical vapour fusing technology smooths and seals the surface of 3D-printed polymer parts, achieving a surface finish comparable to injection moulding. The process is non ‘line-of-sight’, so it can smooth complex geometries and internal cavities in thermoplastic parts, without degrading their dimensional accuracy.

Surface Enhancements

PostPro vapour smoothing improves the performance and aesthetics of each part, taking your 3D parts to the next level. Not only does it create beautiful looking parts, but it also seals the surface, enabling easy cleaning, dyeing and coating.

Mechanical Performance

Most materials gain mechanical performance after vapour smoothing, including increased Yield Stress and Elongation at Break (EAB).


The patented PostPro vapour smoothing technology has UL & CE certification. End-use parts can be certified for skin and food contact.


Vapour smoothing is compatible with over 100 materials of varying printing technologies, both powder-bed fusion and fused filament fabrication.

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PostPro3D machine

Our PostPro 3D vapour fusing machine is ready to smooth your 3D parts and help grow your business.

PostPro3D from AMT delivers high-quality parts efficiently & consistently.


Injection-moulded surface quality

Using a series of pre-defined parameters, our chemical vapour smoothing achieves a surface finish with an RA of less than 1 micron, matching injection moulding techniques.

Seals against liquid & gas intake

The vapour smoothing process completely seals the surface. It is airtight and watertight, eliminating liquid or gas intake.

Increased mechanical properties

Due to the reduction in surface porosity and crack-initiation sites, vapour smoothed parts have an increased Elongation at Break (EAB) with no loss in ultimate tensile strength

Dimensional accuracy

The highly-controllable and repeatable process does not degrade the dimensional accuracy of the parts. After vapour smoothing, parts exhibit less than 0.4% dimensional change, regardless of the desired finish level.

Enhances colour

Coloured parts do not bleed in the vapour smoothing process. Instead, colour consistency and hue are enhanced, making them more vibrant.

Reduction in microbial attachment

Bacterial growth and biofilm formation are reduced on parts, increasing food safety and reducing cleaning.

Materials Compatibility

Compatible with all powder-bed (SLS, HP MJF & HSS) and material-extruded (FDM, FFF, FGF & HSE) printing technologies:

Elastomers - TPE, TPU, PEBA, SBC

  • Surface roughness reduction of over 1000%.
  • Improved shore hardness, elongation-at-break, and tear resistance
  • Uniform sealed surface
  • Shrinkage under 1%

Rigid Plastic - PA6, PA11, PA12, ABS, PC, PP

  • Surface roughness reduction of over 800%
  • Improved ultimate tensile strength, yield stress and elongation-at-break
  • Quality sealed surface
  • Increased functionality

Performance - Carbon-fill, Glass-fill, Flame-retard, Nanocomposite

  • Increased durability
  • Improved elongation at break and ultimate tensile strength


Accelerate your additive manufacturing - vapour fusing will create opportunities for a wide array of new applications.

  • Consumer Goods
  • Electronics & Tooling
  • Aerospace & Transport
  • Medical
  • Dental