AMT PostPro
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 - $15M - March 2021
- 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.