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We developed a cytocompatible vascular graft fabrication platform combining dual\u2010network hydrogels with high\u2010resolution digital light processing (DLP) 3D printing to address these bottlenecks. Through systematic evaluation of hydrogel formulations, we identified a polyacrylamide\u2010alginate\u2010calcium dual\u2010network system achieving tensile properties comparable to native vessels while enabling exceptional suture retention and structural integrity required for microsurgical applications. Integration with DLP printing enabled fabrication of ultra\u2010small microchannels and complex branching vascular networks with patient\u2010specific geometries derived from magnetic resonance imaging (MRI) data. To fine\u2010tune the material properties of the vessels, we developed a machine learning model that optimizes the bioink composition to achieve targeted mechanical properties. We further established an integrated microsurgery training platform combining 3D\u2010printed vessels with essential surgical equipment, providing authentic haptic feedback at a significantly lower cost than commercial alternatives. Biological validation demonstrated robust endothelial cell viability and barrier formation. These studies demonstrated a comprehensive platform addressing multiple critical bottlenecks in vascular graft technology with potential for both accessible microsurgical training and future therapeutic applications in personalized vascular reconstruction.<\/jats:p>","DOI":"10.1002\/smll.75497","type":"journal-article","created":{"date-parts":[[2026,8,27]],"date-time":"2026-08-27T07:55:35Z","timestamp":1787817335000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["A 3D\u2010Printed Microvascular Surgery Training Platform With High\u2010Fidelity, Biomimetic Properties"],"prefix":"10.1002","volume":"22","author":[{"ORCID":"https:\/\/orcid.org\/0009-0007-1420-875X","authenticated-orcid":false,"given":"Lin","family":"Huang","sequence":"first","affiliation":[{"name":"Department of Chemical and Nano Engineering University of California San Diego  La Jolla 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