The originals of automated vapor smoothing · core patent filed Jan 2017
Automated surface finishing
for 3D printed parts.
PostPro vapor smoothing seals and smooths powder-bed 3D prints, inside and out, in one automated cycle: 1.5–2 h on an SF100.
No cost to evaluate · Parts returned · Typical turnaround 2–3 weeks
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- 900+ PostPro systems installed in 40 countries · all product lines
- AI-powered process + service Built on 10M+ process data points
Open it up.
Here is the PostPro SF100, taken apart.
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Built for production.
Designed and built for production environments and high-volume throughput. Inside, one front-loading process chamber of 400 × 600 × 400 mm.
- Outer covers
- Service doors
- Process chamber
- Door and lift
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Vapor in. Consumable back.
On-board vapor generation, then consumable recovery and drying, all inside one closed-loop system.
- Vapor generation
- Recovery and condenser
- Vacuum system
- Fluid handling
- Consumable drawer
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Controlled end to end.
HMI touchscreen, RFID-controlled access and MES/ERP connectivity, from an integrated electrical cabinet.
- HMI
- Electrical cabinet
It goes in as a print. It comes out as a product.
One automated vapor cycle seals the surface, reaches into recesses and fine features, then dries the part, ready for use.
Measured, and published.
Results depend on material, printer and recipe. PostPro Pure, AMT’s own finishing agent, runs in the SFX, SF2X, SF50, SF100. Its chemistry, safety data and test results.
One process. Four sizes.
All four run the same automated vapor smoothing cycle on parts from MJF, SLS, SAF and HSS; FDM ULTEM and Onyx parts on SFX. Choose the chamber that fits your builds.
AMT list prices · indicative · excluding tax and shipping; confirmed in your formal quote. Installation, training and care plans are priced in your formal quote. SFX and SF2X: from the Starter Bundle.
Intelligent by design.
Powered by a decade of processing parts and more than 10 million process data points, AMT has developed its own proprietary algorithms and post-trained models that power our fleet of SF machines.
The touchscreen software.
Load. Smooth. Unload. Repeat.
DMS, AMT’s Digital Manufacturing System, loads and unloads PostPro SF100 systems automatically. It recognizes each tray, selects the recipe for the batch and keeps production running unattended.
From a Sheffield lab to 40 countries.
Born from University of Sheffield research. AMT engineered the machines that automate it, patented the process and has been refining it on production floors ever since.
Our story SF Gen 3 is coming soon. Be first to see it
Parts that ship.
From production machinery to hand prostheses to rally cars, PostPro vapor-smoothed parts are in service, not on a shelf.
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3D Printed Drone | EOS SLS + Vapor Smoothing for Production-Ready UAV
Drone parts printed on EOS SLS and vapor smoothed on a PostPro SF100 by Avid Product Development: sealed against the elements, easier to clean, closer to an injection-molded finish.
Watch on YouTube (opens in a new tab)Nothing loads from YouTube until you press play.
Vapor smoothing is well received at our customers because of surface quality and benefits like enhanced strength, easier cleaning and no effect on detail resolution or dimensional accuracy, and the process runs several times a day contributing to our success.
Run by production partners including Stratasys Direct and Prototal: 125+ production partners and 60+ resellers worldwide. Find a partner
Questions, answered.
What is vapor smoothing?
Vapor smoothing finishes 3D printed polymer parts with a vaporized consumable in a closed chamber. It seals and smooths the surface, inside and out, in one automated cycle: conditioning, processing, curing and drying.
Who invented automated vapor smoothing for 3D printed parts?
The first automated vapor smoothing system for powder-bed 3D printed parts was PostPro3D, launched by AMT in 2018. AMT was founded in Sheffield in January 2017 on University of Sheffield research and filed its core vapor smoothing patent in 2017. Solvent smoothing of plastics in general is older than AMT.
Which 3D printing technologies and materials can be vapor smoothed?
MJF, SLS, SAF and HSS; FDM ULTEM and Onyx parts on SFX. Materials include PA12, PA11, TPU, TPE and polypropylene, and FA326 covers 100+ thermoplastics on the SF50 and SF100.
Does vapor smoothing change part dimensions?
Very little. Published tests measured a dimensional change of ≤ 0.4% on voxeljet HSS PA12 (published ) and ≤ 0.4% on SLS PA2200 (published ).
What is the difference between the SF50 and the SF100?
They are the same machine with two chamber sizes: 400 × 300 × 400 mm on the SF50 and 400 × 600 × 400 mm on the SF100 (W × D × H), both with a 1.5–2 h cycle. The SF50 suits low-volume production of end-use parts, the SF100 high-volume production.
What powers the PostPro SF software?
Powered by a decade of processing parts and more than 10 million process data points, AMT has developed its own proprietary algorithms and post-trained models that power our fleet of SF machines. On the machine, that means recipe recommendations, automated service flags, guided diagnostics and remote support.
How much does a PostPro system cost?
List prices start at $23,100 for the PostPro SFX, $32,620 for the SF2X, $89,390 for the SF50 and $155,050 for the SF100, excluding tax and shipping. Build an itemized quote
Can I test my parts before buying?
Yes. Send us your parts: we vapor smooth them and send them back with before-and-after photos and a benchmark report. No cost to evaluate · Parts returned · Typical turnaround 2–3 weeks.
Send us a part. We’ll send it back vapor smoothed.
Submit your parts online and ship them with a prepaid label. We vapor smooth them and send them back with before-and-after photos and a full benchmark report.
No cost to evaluate · Parts returned · Typical turnaround 2–3 weeks
Your parts arrive, as printed
Hung on the rack
Into the chamber
Back to you, vapor smoothed
