--- title: "Polypropylene (PP) Vapor Smoothing | AMT PostPro" description: "Polypropylene vapor smoothing with the dedicated FA9202 agent: which processes and PostPro systems run it, and AMT’s published PP whitepapers." canonical: https://amtechnologies.com/materials/polypropylene/ updated: 2026-10-07 type: material --- Materials · Polypropylene # Vapor smoothing polypropylene (PP) parts. Polypropylene vapor smoothing reflows the rough surface of a 3D printed PP part into a smoother, closed skin. Polypropylene resists the agents that smooth nylon, so PostPro uses a dedicated one: FA9202. PostPro systems smooth PP printed by MJF · SLS[1]. [Test your parts, free](https://benchmarking.amtechnologies.com/submit?utm_source=amtechnologies.com&utm_medium=material-page&utm_campaign=site-2026&utm_content=pp-pp-hero) [Get a price](https://amtechnologies.com/configurator/) No cost to evaluate · Parts returned · Typical turnaround 2–3 weeks[2] ![FA9202 polypropylene finishing agent canister](https://amtechnologies.ai/img/cons-fa9202-243.webp) Render · FA9202, the PostPro finishing agent for polypropylene. - **Finishing agent**: FA9202[3] - Dedicated to polypropylene - **Systems**: SFX, SF50, SF100[1] - FA9202 listed - **Processes**: MJF · SLS[1] - Polypropylene Why PP is different ## Chemically resistant, so it needs its own agent. Polypropylene is light, tough and resistant to many chemicals, which is why it is printed for fluid parts, clips and housings. The same resistance means an agent tuned for nylon will not smooth it. 1. ### A dedicated agent Dedicated consumable for finishing polypropylene parts[3]: FA9202, listed for the SFX, SF50, SF100. 2. ### A closed, cleanable surface Reflowing the surface closes the open texture of printed PP, so parts are easier to clean and look finished. 3. ### Published on two PP powders AMT has published vapor smoothing whitepapers on BASF Ultrasint PP and on Ricoh PP printed by SLS. 4. ### Same four-stage cycle Conditioning, processing, curing and drying, as for every PostPro material.[4] Agents and systems ## Which machine runs FA9202. Polypropylene from MJF and SLS runs with FA9202. AMT lists FA9202 for the SFX, SF50 and SF100; for the SF2X, ask. **Polypropylene by printing process and finishing agent** | Process | Material | PostPro Pure | FA326 | FA9202 | | --- | --- | --- | --- | --- | | MJF | Polypropylene[3] | Not listed | Not listed | Listed | | SLS | Polypropylene[3] | Not listed | Not listed | Listed | - [SFX Desktop PP listed](https://amtechnologies.com/products/vapor-smoothing/postpro-sfx-desktop-vapor-smoothing-system/) - [SF2X Desktop, double chamber Confirm with AMT](https://amtechnologies.com/products/vapor-smoothing/postpro-sf2x/) - [SF50 Production PP listed](https://amtechnologies.com/products/vapor-smoothing/postpro-sf50/) - [SF100 High volume PP listed](https://amtechnologies.com/products/vapor-smoothing/postpro-sf100/) Material lists as published on each PostPro product page.[1] [BASF Ultrasint PP whitepaper](https://amtechnologies.com/resources/whitepapers/postpro-vapor-smoothing-ultrasint-pp-parts-to-unlock-new-potentials/) [Ricoh PP whitepaper](https://amtechnologies.com/resources/whitepapers/new-process-to-smooth-polypropylene-3d-printed-parts/) [PostPro consumables](https://amtechnologies.com/products/vapor-smoothing/consumables/) Questions ## Polypropylene vapor smoothing: questions. Short answers from AMT’s published material lists. Anything else, [ask an engineer](https://share.hsforms.com/1lOH82JpuRdSM-4wJ1ZeYlw45o6d?website_source=Vapor+Smoothing&utm_source=amtechnologies.com&utm_medium=material-page&utm_campaign=site-2026&utm_content=pp-talk). ### Can polypropylene 3D prints be vapor smoothed? Yes. Polypropylene printed by MJF · SLS[1] is vapor smoothed on PostPro systems with the dedicated FA9202 agent. ### Which consumable is used for PP? FA9202. Dedicated consumable for finishing polypropylene parts[3]. ### Which PostPro machines run FA9202? AMT lists FA9202 for the SFX, SF50, SF100[1]. Confirm the configuration for your machine with AMT, especially for the SFX and SF2X. ### Why can’t PP use the same agent as nylon? Polypropylene resists the agents that smooth nylon and other polar plastics, so it needs an agent chosen for it. Next step ## See the price. Run the numbers. Hold the part. List prices are public and the cost-per-part math is yours to check, with no email needed for either. The free benchmark puts your own parts, vapor smoothed, in your hands. 1. 01 Quote ### Build your quote Pick a system and its options and get an itemized total on screen, from AMT’s published list prices. [Build your quote](https://amtechnologies.com/quote/) 2. 02 ROI ### Calculate your ROI Compare your cost per part with manual finishing, using your own labor rate and volumes. Every assumption is editable. [Calculate ROI](https://amtechnologies.com/roi/) 3. 03 Benchmark ### Test your parts, free Ship us your parts with a prepaid label. We vapor smooth them and send them back with before-and-after photos and a benchmark report. [Test your parts, free](https://benchmarking.amtechnologies.com/submit?utm_source=amtechnologies.com&utm_medium=material-page&utm_campaign=site-2026&utm_content=pp-decision) No cost to evaluate · Parts returned · Typical turnaround 2–3 weeks[2] Prices: AMT list prices, excluding tax and shipping; confirmed in your formal quote. [Not sure which system? Help me choose](https://amtechnologies.com/configurator/) ## Sources 1. [Vapor smoothing consumables: PostPro Pure (FA5802), FA326 and FA9202](https://amtechnologies.com/products/vapor-smoothing/consumables/) · AMT · read Oct 6, 2026 2. [PostPro benchmarking: send us your 3D printed parts](https://benchmarking.amtechnologies.com/) · AMT · read Oct 6, 2026 3. [AMT PostPro brochure: automated post-processing systems for additive manufacturing, V4.0 (June 2026)](https://info.amtechnologies.com/download-document?document_name=brochure) · AMT · Jun 2026 4. [Vapor smoothing: SF and X-series family page and SFX, SF2X, SF50, SF100 product pages](https://amtechnologies.com/products/vapor-smoothing/) · AMT · read Oct 6, 2026 · also [AMT](https://amtechnologies.com/products/vapor-smoothing/postpro-sfx-desktop-vapor-smoothing-system/) · also [AMT](https://amtechnologies.com/products/vapor-smoothing/postpro-sf2x/) · also [AMT](https://amtechnologies.com/products/vapor-smoothing/postpro-sf50/) · also [AMT](https://amtechnologies.com/products/vapor-smoothing/postpro-sf100/)