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AMT PostPro

Post-ProcessingSheffield, UK (headquarters); Austin, Texas, USA (Americas HQ); manufacturing facility in Hungary; distribution partners across North America, Europe, and Asia-Pacific (including Taiwan via TEAMA)Founded 2017· One of 132 Post-Processing companies tracked by AMPulse

AMT PostPro is a Sheffield-based manufacturer of automated post-processing hardware systems for 3D printing, offering end-to-end surface finishing (chemical vapor smoothing), depowdering, surface blasting, and automated unpacking solutions under the PostPro brand; the world's largest independent provider of automated finishing systems for polymer AM, processing 30M+ parts across 300+ blue-chip customers in 25+ countries

CEO / Founder
Joseph Crabtree
Team Size
51-200
Stage
Active
Total Funding
$20.2M
Latest Round
Series B
Key Investors
DSM Venturing; Foresight Williams Technology EIS Fund; Saint-Gobain Surface Solutions; 15th Rock Ventures; Foresight Group; Midwest Additive Ventures; NPIF-Mercia Equity Finance

Technology & Products

Key Products

PostPro SF, PostPro SFX (bench-top/desktop vapor smoothing), PostPro UP (automated unpacking cell), PostPro Pure (green vapor smoothing chemistry).

Technological Advantage

Proprietary patented chemical vapor smoothing process (exclusively licensed from University of Sheffield); inventors and market leaders in vapor smoothing expanding to complete post-processing; technology also applicable to conventional CNC-machined parts surface enhancement; UL and CE certified systems; Industry 4.0 compatible (WiFi, Ethernet, MES/ERP integration); continuous belt depowdering technology for high throughput (parts cleaned in under 10 minutes); 40+ granted and pending patents; strategic HP partnership for MJF ecosystem; PostPro Pure green chemistry (biodegradable, FDA-approved consumables)

Differentiation

Value Proposition

Automated, end-to-end post-processing platform that eliminates manual finishing bottlenecks in polymer AM production; PostPro systems deliver injection-mold-equivalent surface finish (matching injection molding techniques via pre-defined parameter sets and algorithms), compatible with all major 3D printing technologies (SLS, MJF, HSS, SLA, DLP, PolyJet, FFF) and 150+ thermoplastic materials; printer and material platform agnostic; also applicable to conventional CNC-machined parts for surface quality enhancement

How They Differentiate

World's largest independent provider of automated AM finishing systems; only company offering integrated end-to-end polymer AM post-processing (unpack, depowder, blast, vapor smooth) in unified automated platforms; inventors and market leaders in vapor smoothing with exclusive University of Sheffield IP; printer and material platform agnostic (150+ thermoplastics, all major AM technologies); technology extends beyond AM to conventional manufacturing (CNC surface enhancement); first bench-top/desktop vapor smoothing system (PostPro SFX); green chemistry with biodegradable FDA-approved consumables

Market & Competition

Target Customers

Service bureaus, OEMs, and manufacturers running industrial polymer 3D printers (SLS/MJF/SLA/DLP/HSS/FFF) who need high-quality surface finishing at production scale; 300+ blue-chip customers across diverse industries as of 2025; OECHSLER uses PostPro in their DMS 24/7 fully automated lights-out production system

Industry Verticals

Consumer Products (including Under Armour), Medical/Healthcare (prosthetics, certified medical parts), Industrial, Automotive, Aerospace, Sporting Goods; medical certification achieved for HP-printed parts processed with PostPro vapor smoothing

Competitors

PostProcess Technologies, DyeMansion

Growth & Milestones

Growth Metrics

Record profitable growth year in 2025 with 40% YoY rise in order bookings; 30M+ components processed across 300+ blue-chip customers (as of 2025); team grew from ~60-80 (2021) to ~100 (2025) across UK, Hungary, USA; no specific revenue/ARR figures publicly disclosed — private company

Major Milestones

2017: Founded in Sheffield; 2019: Series A (GBP 4.2M, DSM Venturing lead); 2020: Revenue doubled YoY; 2021: Series B (GBP 11M), 6M+ parts processed, expanded to US (Austin, TX); 2022: HP strategic partnership for integrated post-processing; 2025: Record year — 40% YoY rise in order bookings, profitable growth; 2025 (Sep): SurfacePrep reseller partnership (North America); 2025: TriMech Group strategic partnership (North America); 2025: PostPro UP (automated unpacking) and PostPro SF2X launched at Formnext; 2025: PostPro SPX flagship system announced (€80,000, shipping Q1 2026); 2025: TEAMA reseller partnership (Taiwan); 2025: Prototal partnership; 2026 (Feb): Sponsoring/speaking at Additive Manufacturing Strategies (AMS), New York; 30M+ parts processed, 300+ customers

Notable Customers

Intelligent Energy, Prototal UK, GM, customers using Markforged and Stratasys systems for ULTEM™ 9085 parts.

https://amtechnologies.com

Why this company matters

AMT PostPro is the world's largest independent provider of automated finishing systems for polymer additive manufacturing. Founded in 2017 in Sheffield, UK, the company addresses the post-processing bottleneck that has historically limited polymer AM adoption at production volumes. Its integrated platforms combine depowdering, surface blasting, chemical vapor smoothing, and automated unpacking in a single workflow, allowing manufacturers to achieve consistent surface finish without manual sanding or secondary operations.

The core technology is a proprietary chemical vapor smoothing process exclusively licensed from the University of Sheffield. The PostPro SF, SFX, and SPX systems apply controlled vapor exposure to smooth layer lines and pores across parts made by SLS, MJF, HSS, SLA, DLP, PolyJet, and FFF. The process works with over 150 thermoplastics and is printer- and material-agnostic. The PostPro Pure chemistry is biodegradable and FDA-approved for consumables. Systems are UL and CE certified and integrate with MES/ERP via WiFi and Ethernet for lights-out production.

AMT PostPro serves service bureaus, OEMs, and industrial manufacturers across consumer products, medical, automotive, aerospace, and sporting goods. Named customers include Intelligent Energy, Prototal UK, and GM, as well as users of Markforged and Stratasys systems for ULTEM 9085 parts. The company has processed over 30 million parts across 300-plus blue-chip customers in 25-plus countries. A strategic partnership with HP integrates PostPro systems into the Multi Jet Fusion ecosystem, and Oechsler uses the platform in its fully automated DMS lights-out production cell.

The company's competitive moat rests on its exclusive IP portfolio of 40-plus granted and pending patents, its platform-agnostic design, and its ability to extend vapor smoothing to conventional CNC-machined parts. Key investors include DSM Venturing, Saint-Gobain Surface Solutions, and Foresight Williams Technology EIS Fund, with total disclosed funding of $20.2 million. In 2025, AMT PostPro reported record profitable growth with a 40% year-over-year increase in order bookings. The main competitive risk is the emergence of alternative surface-finishing technologies from DyeMansion or PostProcess Technologies that could narrow the quality gap without requiring proprietary chemistry.