Has anyone tried to stick polypropylene or polyurethane? Its designed to be 'greasy' like PTFE so that apart from heat welding its hard to do. I am building a radio controlled swan from a decoy plastic full sized thing that is designed to sit on a garden pond and scare herons and the like. I have tried a two part adhesive which consists of a solvent primer and a cyano topcoat, but has anyone tried anything else which works?