Seamless three dimensional woven fabrics reduced manufacturing time and space requirements by eliminating cutting, trimming, and waste. Conventional looms manufacture three dimensional fabrics by creating local cavities, cells, ridges, hollows, and honeycomb structures. Specialized looms manufacture spirally woven fabrics from carbon brake materials. A novel interlacing method varies warp and filling yarn spacing to weave three dimensional shapes for aerospace, automotive, and apparel end uses. These fabrics also have applications in pipe fittings, reinforcement of pressure vessels, tapered reinforcement for pillars and other element, and manmade blood vessels. These fabrics also have applications in pipe fittings, reinforcement of pressure vessels, tapered reinforcement for pillars and other elements, and manmade blood vessels. Electronic weaving control permits the creation of branched tubes and curvatures and the incorporation of one or more constrictions of diameters along the tube length. 4 refs.