Abstract: A quick-release line inserter having an inserter shaft (1) with a line slot (2) for containing line (3) positioned on an outside perimeter of an inserter shaft that is sized and shaped for the shaft and the line to enter a space or aperture to be threaded. The shaft can have various cross-sectional configurations. The inserter shaft also can be designedly tapered or untapered and have a design curvature for particular use conditions. The shaft is held with a shaft handle (4). Use is by positioning line on the inserter shaft, inserting the inserter shaft containing the line through a space or aperture, grasping the line at an exit side of the space or aperture, removing the inserter shaft from the space or aperture, and releasing the line from the inserter shaft.