If you are looking for a resin blend that helps in the repair of both fiberglass and SMC, then the USC All Resin Repair Resin is a good choice. The repair resin has quicker cure time and provides exceptional vertical hold. The special adhesion property of the USC All Resin Repair Resin gives you a structurally firm and problem-free repair. The repair resin is best used with cloth, mat, fiberglass, and tape.

Key Features of the USC All Resin Repair Resin:

Provides excellent vertical hold due to its thick, non-sag formula. This greatly helps in the repair of side panels and trucks
The repair resin delivers a tack-free finish due to its quick curing property
Easy sanding property without clogging the sandpaper
Durable, Rustproof, and Waterproof
Cream hardener
Available in 1 gallon cans
Technical Specifications

Appearance as Packaged: Amber Opaque Viscous Liquid
VOC: 384 g/l
1.6 g/l loss upon cure
Weight Per Gallon (Density): 9.45 pounds (Average)
Maximum Recommended Thickness (sanded): 1/8"
Viscosity @ 77°F: 1280 cps (Average)
Gel Time @ 77F: 7.0 - 10.0 minutes
Shore "D" Hardness Values @ 24 hours: 70-75
Sanding Time @ 77°F: 60 minutes (Average; depends on thickness of mass)
Maximum Heat: 200° F for 30 minutes