Comments about Pettit Z-Spar Pettit Flexpoxy:
Works great! It has a thick body but smooths well. Have used it in thick and fairing locations. Great to build filits and can be tinted, with stain or paint and finishes well. Keeps wood and other flexing parts togather. Use it in my wood boat and home.
Longer cure time 12 or so hours, heat will speed things up.