BSI Finish-Cure 20 Minute Epoxy is an excellent, low odor substitute for polyester resins. It can be used for applying fiberglass cloth to wood or by itself to give wood a surface ready for primer and paint. Finish-Cure can be sanded the easiest of all the BSI epoxies and is excellent for the sheeting of foam core wings. Allow 8 hours for full curing.
For best results, Finish-Cure should be heated to a temperature above 30 degrees C or when applying light weight fiberglass, 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 playing card from an old deck. Heat and remove excess several times for a light weight finish. If room temperature is below 20 degrees C 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 spackling compound, scrapping off excess with a playing card. Sand to a smooth finish ready for primer. For heavy weight fiberglass, apply the epoxy before and after laying down the cloth.
All BSI epoxies are mixed in 50:50 ratios. Squeeze out equal length beads of the desired amount of epoxy, then mix together thoroughly with an ice-block stick or scrap piece of material. In cold weather, epoxy takes longer to cure and becomes more difficult to get out of the bottle, especially if it�s less than 1/2 full. The epoxies can be heated by standing the bottles in a cup of hot water so that they flow easier. The heating process, with the caps off, also releases any moisture that can be absorbed by epoxies. Their shelf life, therefore, is virtually unlimited.
