Entropy Super Sap Clear Laminating Fast Hardener
Entropy Resins Entropy Resins
  • Entropy Super Sap Clear Laminating Fast Hardener
  • Entropy Super Sap Clear Laminating Fast Hardener snow
  • Entropy Super Sap Bio-based Epoxy Fast Hardener

Entropy Super Sap CLF Clear Fast Hardener

Entropy's CLF Fast hardener is used when faster curing of bio-based Entropy CLR Clear Resin is desired or when working in colder temperature. The CLR Clear Epoxy system is a low viscosity, low color and UV stable liquid epoxy for composites, coatings, and adhesive applications.

Super Sap CLR is optimized for hand lay-up, room temperature processes, or infusion laminating of wood, fibers, glass, carbon, or Kevlar. All Super Sap resins exhibit low color, excellent air release, & UV stabilized technology allowing clear products with excellent color stability.

Use with Super Sap CLR Clear Resin for medium pot life & low exotherm lamination & coatings. Entropy Clear Resin (CLR) & CLS/CLF Hardeners have a Bio-Content greater than 30%, and can be modified with epoxy compatible colorants & fillers.

IN STOCK - Available for pickup  
$17.43 / ea
 The item was added to your wishlist.
 The item was added to your shop cart.
Tech Spec Product Info User Generated Content

Entropy Resins Clear Fast Hardener

  • Pot Life 25 min
  • Hardener for Clear Epoxy coating
  • Room Temperature Cure
  • Can be Post Cure at 120°F
  • Easy 2 to 1 by Volume Ratio with Resin
  • Requires corresponding sized CLR Resin for use (2:1 ratio). See chart below.


Entropy Resin Hardener  Clear Fast Hardener 
Mix Ratio  2:1 
Gel Time- min  25  
Mix Viscosity (cps@77°F)  2000 - 4000 
Tack Free (hrs@77°F) 
Thin Film Set (hrs@77°F) 
Property  Clear Fast Hardener 
Tensile Modulus (psi)  500K 
Tensile Strength (psi)  9410 
Flexural Modulus (psi)  440K 
Flexural Strength (psi)  13534 
Elongation at Break (%) 
Tg (F)  240 
Super Sap CLR Epoxy Resin Quantity  Super Sap CLF Hardener Quantity  Mixed Quantity 
16 oz resin  8 oz hardener  24 oz 
1/2 gallon resin  1 qt hardener  3 qt 
1 gallon resin  1/2 gallon hardener  1.5 gallons 
2 gallons resin  1 gallon hardener  3 gallons 
4 gallons resin  2 gallons hardener  6 gallons 
5 gallons resin  2.5 gallons hardener  7.5 gallons 

No Compromises. Performance, Sustainability, Lower Environmental Impact.

The mission at Entropy Resins is to provide epoxy resin systems for a new generation of products. Products that not only perform, but also take a crucial step towards lowering our impact on the environment.

Entropy Resins produce epoxy systems engineered to meet or exceed the performance standards of petroleum based resin systems with a focus on environmentally sustainable production. Environmental benefits include bio-based content sources and a reduced carbon footprint. Super Sap uses a pine pulp based resin sourced from by-product of paper manufacturing processes and plant based byproduct from bio fuels processing. Bio based Super Sap resins also benefit the applicator with less sensitizing ingredients than petroleum based epoxies.

BRAND: Entropy Resins
Material: Epoxy
Rate Of Cure: Fast
Type: Hardener
4.5 2


by PowerReviews
Entropy ResinsEntropy Super Sap CLF Clear Fast Hardener

(based on 2 reviews)

Ratings Distribution

  • 5 Stars



  • 4 Stars



  • 3 Stars



  • 2 Stars



  • 1 Stars



Reviewed by 2 customers

Sort by

Displaying reviews 1-2

Back to top


Entropy super sap CLF clear Fast Hardner

By Darrell the bait tank builder

from Burnsville West Virginia

About Me Beginner

Verified Reviewer


  • Easy to Use
  • Goes On Easydries Clear
  • Protects Well
  • Visually Pleasing
  • Weather Proof


  • No Cons On My End

Best Uses

  • Building Bait Tanks
  • Outdoor
  • Quick Fix
  • Wood Trim

Comments about Entropy Resins Entropy Super Sap CLF Clear Fast Hardener:

this product is so easy to use, I also used the pump for the bottles and they make it so easy to measure out the proper mix. I am building wooden bait tanks to hold bait fish, I built the out of 3/4" plywood and then used Entropy CLR Clear Resin with the slow hardener. This gives you lots of time to lay your fiberglass matt down and mix more if you are running short when you add a coat to your matt. Once you paint your matt with using a short bristle brush, use a plastic spreader board to smooth out wrinkles in the matt. It will dry to a clear finish. And it is paintable.

  • Was this a gift?:
  • No

Excellent, so far....

By Kempton

from Long Island, NY

About Me Professional

See all my reviews

Verified Buyer


  • Easy to Use
  • Protects Well
  • Visually Pleasing


    Best Uses

    • Composite Laminates
    • Indoor
    • Outdoor

    Comments about Entropy Resins Entropy Super Sap CLF Clear Fast Hardener:

    Super Sap CL/F is an excellent system, as far as I have tested it for strength and workability in composite laminates. The only testing left to do takes time - we all know how epoxies can become brittle and weaken, especially in marine applications. It's great for now, and for the final results, we wait....

    • Was this a gift?:
    • No

    Displaying reviews 1-2

    Back to top

    Related Items:
    JD on Facebook Live Tech Support Jamestown Forum Free Catalog