Finish-Cure 20 min. constitutes a great low odour substitute for polyester resins and can be used to laminate fibreglass cloth over a wooden substrate or indeed be applied on it's own to form a finish coat that can accept further primer and finish coats. Finish-Cure is the easiest of all the epoxies to sand and is ideal for the sheeting of foam core wings. For best results, Finish-Cure should be heated to a temperature above 29°C (85 °F) for applying lightweight fibreglass. Lay cloth on balsa first, then brush on Finish-Cure, when fully saturated, go over the surface with a heat gun and then squeegee off excess epoxy with a stiff piece of card (a playing card from an old deck does the job well). Heat and remove excess several times for a lightweight finish. If room temperature is below 21°C (70 ° F) use a heat gun on the surface several times for the next 2 hours. When dry lightly sand then fill surface with a low weight spakeling compound, scrapping off excess with some card. Sand to a smooth finish ready for primer. For heavy weight fibreglass apply the epoxy before and after laying down the cloth. Finish-Cure takes 8 hours to fully cure.