Vapor Smoothing

Finishing process

Need your 3D-printed parts to look better and perform better?

Try vapor/mechanical smoothing!

One of the most exciting secondary finishing techniques GoProto employs on our Multi Jet Fusion parts is BLAST Vapor Smoothing. This process uses the AMT PostPro3D smoothing machine to expose parts to a vaporized solvent gas, which reorders the surface molecules to smooth the part without dramatically affecting the dimensions ( it reduces the part dimensions by roughly .4%).

Not only does this process improve the surface finish of the parts, but tests have shown that the parts are also made more tough, elongation is improved, resistance to liquids is improved, and the part is sealed better, which provides for better surface adhesion for gasketing and suction and provides an excellent base for adding paint, Cerakote, hydrographics or clear coat.

PostPro3D® is a CE and UL listed machine and is based on AMT’s proprietary BLAST™ process (Boundary Layer Automated Smoothing Technology)which is a physical-chemical-based process that can smooth a wide variety of thermoplastic polymers that are printed in MJF, or FDM 3D printing technologies. The process is non-line-of-sight and can smooth complex internal cavities of polymer parts.

The PostPro3D technology is highly controllable, allowing reproducible results with no degradation of a parts’ mechanical properties – and in fact it improves some mechanical properties such as elongation and impact strength. Smoothing makes parts look great and since there is no secondary layer added there is very minimal impact to tolerances and there’s no paint to scratch!

“Thank you for turning this around so quickly! The painted parts look great. It is very much appreciated!” — Shokoofeh (Contract Design Manufacturing Company)

Improved Scratch Resistance with Vapor Smoothing

Download More Information

Vapor Smoothing PA12
– Summary of Tests –

Vapor Smoothing PA12
– White Paper –

Vapor Smoothing PA11
– AMT Tech Paper –

Vapor Smoothing
– AMT Case Study –

Related Materials and Finishing

TPU (Thermoplastic Polyurethane, Elastomer)
Glass Bead Filled PA12
Vapor Smoothing
Dyeing, Painting, Clear-Coat

“Good morning Greg, Hope the week is going well so far. Thank you for touching base with me yesterday. Regarding the bracket sample, wanted to let you know that it’s probably the nicest 3d print quality I’ve ever seen. All the features came out great and the material has the strength and toughness that we’re looking for in the application.” — Marcel – Leading Electrical Panel Manufacturer
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