Abstract. Ranque-Hilsch vortex tubes are simple devices that can produce a cooling effect using compressed air. A key advantage of vortex tubes is the lack of moving solid parts; however, their efficiencies are relatively low. The present study focuses on the development of a miniature variable-diameter tube using additive manufacturing. A metal-based 3D printing technique was utilized to View PDF; Download Full Issue; Polymer Testing. Volume 106, the filament was rapidly cooled by a vortex tube cooler and attached to the printer substrate or previously printed layer. The printer nozzle and vortex tube cooler could move in the X-Y plane along the above path codes generated from the TCS model. After printing each layer, the Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. Get unbiased ratings and reviews for 9,000+ products and services from Consumer Reports, plus trusted advice and in-depth reporting on what matters most. For the health and safety of our community and staff, Paperman & Sons Inc. kindly requests that all those who are attending a funeral in our chapel to please wear a mask. We appreciate your cooperation and understanding.