Entropy Clear Casting Slow Hardener (CCS) produces a low exotherm, long pot life reaction when mixed with Entropy Clear Casting Epoxy Resin (CCR). The high clarity and slow cure speed allows for bulk or high-build castings desirable for jewelry, furniture, and bar top or tabletop projects.
Clear Casting Resin (CCR) features low color, excellent air release, and UV stabilizer technology. The result is crystal clear products with excellent color stability.
Use CCR Resin with CCS slow hardener at a 2:1 mix ratio for large castings greater than 1 inch thick. Combined resin and hardener have a bio-content greater than 30%, and can be modified with epoxy compatible colorants and fillers.
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IMPORTANT! Use Entropy Clear Casting Slow Hardener (CCS) for mass castings with thicknesses greater than 1 inch.
NOTE: Exact fill weight of 5 Gallon CCS Hardener is 4.904 gallons.
Clear Casting Slow Hardener (CCS) Combined with Clear Casting Epoxy Resin (CCR) Features
Slow hardener for Entropy's Clear Casting Epoxy Resin (CCR).
Green epoxy resin with slow room temperature cure; post cure recommended.
Clear-as-water, low-viscosity resin ideal for hand layup and vacuum bagging.
Great for high-color applications requiring a clear, non-yellowing resin system.
Ideal for high-build or bulk castings greater than1 inch thick.
CCS requires corresponding size of CCR Epoxy Resin for use (2:1 mix ratio). See chart below.
Clear Casting Epoxy Resin (CCR)/Clear Casting Slow Hardener (CCS) System Best Uses
Bar or table top epoxy
Embedding and encapsulation
Resin castings, especially high-build or bulk castings greater than 1" thick
Art and craft resin
Specifications & Mechanical Data
Mix Ratio by Volume
Mix Ratio by Weight
Mixed Viscosity @ 77°F
Pot Life @ 77°F
360 minutes (6 hours)
Tack-Free Time @ 77°F
Ideal Working Temperature Range
Optimal - 60-80°F; Extended - 50-90°F
Maximum Castable Amounts @ 77°F
34 oz. (1000g); 8-inch cube
Recommended Full Cure
7 days @ 77°F; Post cure recommended.
Hardness, Shore D
CCR Epoxy Resin Quantity
CCS Hardener Quantity
16 oz. hardener
1/2 gallon resin
1 qt. hardener
1 gallon resin
1/2 gallon hardener
2 gallons resin
1 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).
Rate Of Cure:
Very clear, minimal bubbles. One small batch did not cure, but it may have been a contaminated mixing cup. All other batches cured beautifully. Had to exchange slow cure hardener for "fast" cure, as I did not know the pot life/cure times at the time of purchase. I'm not known for my patience, but "fast" is pretty slow compared to other epoxies I've used. Check the manufacturers website for details.