3:1 Epoxy Hardener - Medium Cure
Description
3:1 Epoxy Hardener – Medium Cure Hardener for Thin & Thick Epoxy Resin Systems
The 3:1 Epoxy Hardener – Medium Cure is engineered to provide a balanced working time and reliable cure performance for a wide variety of epoxy applications. As a medium-speed hardener, it offers the perfect middle ground between our slower 2:1 Hardener and our fast 4:1 Hardener, making it an excellent all-purpose choice for laminating, coating, bonding, and composite repairs.
When mixed at a 3:1 ratio (3 parts epoxy resin : 1 part hardener), this hardener delivers a dependable cure profile ideal for use with both our Thin Epoxy Resin and Thick Epoxy Resin systems. Whether you're working on fiberglass, carbon fiber, or wood substrates, this hardener provides strength, clarity, and ease of use.
Key Features & Benefits
- Medium Cure Speed – Offers a balanced pot life and working time suitable for most epoxy applications.
- 3:1 Mix Ratio – Simple 3 parts resin to 1 part hardener by volume.
- Moderate Pot Life – Approx. 20–25 minutes at 80°F (27°C).
- Set Time – Typically sets in 3–4 hours depending on temperature and film thickness.
- Dry Time – Reaches handling cure in approx. 8–10 hours.
- Versatile Use – Ideal for laminating fiberglass, repairs, small castings, and epoxy coating projects.
- Compatible With Multiple Systems – Works with Thin Epoxy Resin and Thick Epoxy Resin.
Recommended Applications
- General composite laminating
- Fiberglass and carbon fiber layups
- Boat repair and marine applications
- Epoxy coating and sealing
- Woodworking and bonding applications
- Repair patches and reinforced parts
Important Notes
- This product may blush depending on humidity and curing environment.
- Store in a cool, dry place; shelf life is approximately one year.
- Use promptly after purchase for best results and proper curing.
- Works best in temperatures above 70°F (21°C).
For a balanced cure speed, excellent strength, and broad application flexibility, 3:1 Epoxy Hardener – Medium Cure is the ideal choice for professional-quality epoxy work.