Using a stirring rod, grab the nylon film at the interface and wind the nylon thread around the windless. Once attached to the axle you can continue to extract a thin nylon thread 6-10 meters long. Wash the nylon in water before handling. Both monomers are corrosive to the eyes, skin and respiratory system. NaOH is caustic.
Hexane is flammable, has a high vapor pressure and can irritate the respiratory system.
Mix remaining solution to form nylon, which can be washed and discarded in the solid waste. Neutralize remaining solution and flush down the drain. Only experienced and trained personnel in safety and chemistry should perform this demonstration. Appropriate safety protection and procedures should be followed at all times.