Bob Smith Industries FINISH-CURE 20 Minute Epoxy (13oz)
About:
FINISH-CURE 20 min. epoxy is a low-odor substitute for polyester resins. It's excellent for applying fiberglass cloth to wood or giving wood a surface ready for primer and paint. FINISH-CURE can be sanded easily and is great for the sheeting of foam core wings. Allow 8 hours for full curing. For best results, heat FINISH-CURE to a temperature above 85ºF. When applying lightweight fiberglass, lay cloth on balsa first, then brush on FINISH-CURE. After full saturation, use a heat gun and squeegee off excess epoxy with a playing card. Heat and remove excess several times for a lightweight finish. If room temperature is below 70ºF, use a heat gun on the surface several times for the next 2 hours. When dry, lightly sand, then fill the surface with a low-weight spackling compound, scraping off excess with a playing card. Sand to a smooth finish ready for primer. For heavyweight fiberglass, apply epoxy before and after laying down the cloth. FINISH-CURE is best mixed in a disposable cup.
Works Best On:
- Fiberglass
- White Foam
- Laminating
- Water-Resistant
Works Good On:
Directions:
FINISH-CURE is an excellent substitute for polyester finishing 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 IS NOT A STRUCTURAL EPOXY. It is primarily used for coating and finishing. It's the best choice for applying cloth to the inside of epoxy fiberglass fuselages and commonly used for the sheeting of foam wings.
When an ounce or more is mixed in a cup, the working time (pot life) is 20 minutes. When spread into thin layers, the working time is approximately 40 minutes.
THE FINISH AREA MUST REMAIN ABOVE 75º FOR 8 HOURS FOR PROPER CURE. If the ambient temperature is below 75º, heat FINISH-CURE Epoxy and Hardener bottles with tops removed in the microwave for 20 seconds (use less time for partial bottles). After applying, you can occasionally apply a heat gun during the curing time or cover the project with a large cardboard box with a lamp placed inside to maintain a higher temperature.
For applying to lighter weight fiberglass, lay the cloth on the surface and brush FINISH-CURE through the cloth. For heavier cloth, apply the epoxy on the surface first, then brush FINISH-CURE through the cloth. When using FINISH-CURE for the sheeting of foam wings, make sure to apply FINISH-CURE to the wood and not the foam. Acetone and isopropyl alcohol work as the best solvents for cleaning uncured epoxy from surfaces.
