Increased air jet weaving speeds have accentuated problems due to warp end clinging. Clinging causes warp induced pick stoppages, which reduce loom efficiency and increase the incidence of stop faults. A research project examined the properties that influence clinging and the effects of yarn type, sizing agent, and loom settings on clinging tendency. Researchers conducted weaving trials using Jakob Muller narrow fabric looms. The trials indicated a higher clinging tendency for fine, hairy yarns. The relationship between warp end tension and clinging was complex and also depended on such factors as the location of the tension measurement device (rear or front shed) and the degree of sizing. Yarns treated with sizes that possessed higher adhesive powers and tensile strength functions experienced less clinging. Reducing the rear shed length and increasing weaving speeds also resulted in less clinging. The tendency to cling increased as the warp and weft density increased. 9 refs.