Abstract: A handweaving system with detachable, variable-sized, flush rod sides, comprised of individual rods connectable together with threaded studs to achieve varying lengths and widths. The rod sides attach to same-plane corner supports in a manner that simultaneously provides working space for the hands and weaving fiber around the rod sides and forms an unobstructed inside angle where the rod sides meet. When used with a technique of weaving known as SunWeaving, the smooth rod surface of this handweaving frame produces a versatile, functional looped edge that borders the entire woven article. In addition to variable dimensions, the handweaving system adapts to a variety of weaving fiber sizes, gauges, handweaving techniques, and applications.