Entropy Super Sap CLR Clear Epoxy Resin is the base component of Entropy's CLR low-viscosity, low-color, UV-stable system for composites, coatings & adhesive applications.
It's optimized for hand layup, room temperature processes, or infusion laminating of wood, fiberglass, carbon, or Kevlar. It's air release and UV protection create clearer cured laminates with excellent color stability.
CLR resin forms a hard plastic surface when cured with Super Sap hardeners: CLS slow hardener offers long pot life, CLF fast hardener offers shorter pot life and faster curing, and CLX hardener has the fastest tack-free time. The CLR system has a bio-content greater than 30% & can be modified with epoxy-compatible colorants and fillers.
NOTE: For white cosmetic applications, use Super Sap BRT Clear Epoxy Resin, which uses the same hardeners as the Super Sap CLR system.
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Why Use Super Sap®?
Super Sap formulations, as opposed to traditional epoxies that are composed primarily of petroleum-based materials, contain renewable, biobased materials sourced as co-products or from the waste streams of other industrial processes, such as bio-fuels and wood pulp production. The benefits of these natural components are exceptionally high adhesion properties and excellent elongation.
Three Easy Ways to Measure Super Sap Resin and Hardener
By Volume: 2 parts resin to 1 part hardener.
By Weight: Varies. Check Technical Data Sheets for specific ratio.
By Pumps: The calibrated Entropy Pump Set (sold separately) measures the exact 2:1 ratio by volume with no mess or guessing about correct measurements, so you get a proper cure every time. Pumps can be used with the 2:1 Super Sap ONE, CLR, BRT, CPM, and CCR Resin Systems.
Measuring & Mixing Notes: For best results, use a scale to measure the two components by weight (within 5% of the recommended mix ratio). Always mix product thoroughly for at least two minutes. To ensure complete mixing, scrape all surfaces of the container.
IMPORTANT: Super Sap CLR works better in low-humidity environments, especially when it's used outside of the recommended optimal temperature range. See specific temperature ranges in Application Tips.
Entropy CLR Resin Features
Crystal clear color is ideal for clear coating applications
Choose from Extra Fast (CLX), Fast (CLF), and Slow(CLS) Hardeners to adjust working properties and cure time
UV stable formula
Excellent air release
Requires corresponding sized CLX (Extra Fast), CLF (Fast) or CLS (Slow) hardener for use (2:1 ratio). See chart below.
CLR Resin & Hardener, Admixed
CLX Extra Fast
Mix Ratio by Volume
Mix Ratio by Weight
Pot Life @ 77°F
Tack-Free Time @ 77°F
19.5 g/L (0.16 lbs/gal)
31.5 g/L (0.26 lbs/gal)
16.1 g/L (0.13 lbs/gal)
Biobased Carbon Content
Hardness, Shore D
Super Sap CLR Epoxy Resin Quantity
Super Sap CLX, CLF, or CLS Hardener Quantity
1 qt. resin
16 oz. hardener
1/2 gallon resin
1 qt. hardener
1 gallon resin
1/2 gallon hardener
5 gallons resin
2.5 gallons hardener
Safety and Handling Information
Despite the natural derivation of Entropy resin products, exposure to these materials represents hazards typical of all epoxy resins. Exposure should be minimized and avoided through the use of proper personal protective clothing & equipment, and appropriate manufacturing controls. All persons who use, store, or transport these materials should understand proper handling precautions and recommendations, as stated in the SDS (safety data sheets).
I am looking for a glass clear epoxy that is not self leveling. I need something to coat curved shapes on both sides. I see the tape in the video, that makes good sense. but is there something I can use that will coat the sides - I am using 3/8" plywood, steam bent and slightly curved / twisted. the pieces are 2-4 inches wide and painted with an acrylic paint. I have coated them when they are flat, but not curved pieces
You could use this in light coat build ups so it all doesn't run off.
JD Tech Team
When buying the 5 gallon unit, a 2.5 gallon hardener kit would need to be purchased. Is this correct? Or is this 5 gallons total once mixed with hardener?
When you buy a 5 gallon unit of Resin you will nee a 2.5 gallon unit of hardener. The mixture ratio is 2:1.
Hey Jimmycakes,I've used this product a handful of times when working on surfboards. You need to purchase the resin and separate hardener. Both products have different shelf life. Also it's a 2:1 mix ratio
5 gallons is the amount of epoxy resin. You would need approximately 2.5 gal. of hardener to mix with the 5 gal. of resin.
Can this resin be used to cast jewelry? and or 3 d objects (in stages) like coaster, paperweights etc? and does it emit fumes like other resins? thank you JD
For casting jewelry and embedding you would be better off using the Entropy CCR/CCS resin. It does emit some small amount of fumes, but nowhere near the smell you get from a polyester resin. Thank you.
Can you ship this via USPS international ?. or USPS Express I am From Nicaragua
FYI: The resin is not regulated which means that it can be shipped via air or USPS. The hardener, however, is a class III Hazardous Material which means that it cannot ship USPS, Internationally, or via air. The hardener ships regular ground as a consumer commodity with no extra hazmat fees.
Giezi Amador, we are sorry but we cannot ship Hazardous Material internationally.
The epoxy worked great. I was building a bamboo bike and this brand was recommended.
Used Entropy Resin and Hardener to fiberglass a cedar strip canoe. Easy to mix and use, super clear, and doesn't smell bad. The best part is it hasn't had any problems curing even though my shop is on the cold side.
Great so far....
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....