Diamond Clear Casting Resin
Deep-pour epoxy casting system · US · manufacturer-sourced
How long does Copps Industries Diamond Clear Casting Resin take to dry?
Short answer
Cast-and-demold plan
Gel, demold and full cure are separate days
- Mix the Deep-pour epoxy casting system to ratio and pour
- Wait for the demold time
- Sand or finish after full cure
This product’s stated stages Quoted at 75°F
- Working time ends4–6 hours
- Tack-free1–2 days
- Set1 day
- Full cure3 days
Worth noticing: Working time is only 4–6 hours; the next stated stage, tack-free, is 1–2 days.
Common mistake: Demolding early and leaving a soft, tacky casting that never fully hardens.
Project stage ladder
Demolding, handling, finishing and final use may occur at different times
For river tables and deep castings, identify which stage the stated 1 day milestone actually unlocks. Earlier handling does not prove final cure.
Time demold and cure
Your countdown
Stated times
- Working time ends4–6 hours
- Tack-free1–2 days
- Set / hardened1 day
- Full cure3 days
From Copps Industries data sheet · checked 2026-10-25. Anything not listed isn’t stated by the manufacturer.
Manufacturer website: coppsindustries.com
Conditions & fine print
- Stated conditions: 75°F (24°C)
- Casting resins cure faster and hotter in large or warm pours. Follow the current data sheet and pour limits.
- Region US. Formulas can differ between countries; check your container.
- Working time ends: The source gives no conditions for this time.
- Tack-free: The source gives no conditions for this time.
- Set / hardened: The source gives no conditions for this time.
- Full cure: The source gives no conditions for this time.
- Entered from the cited manufacturer documentation. Check the current label for the exact formula and region. Report outdated information
- Actual results depend on preparation, thickness, ventilation, temperature, humidity, mixing and substrate.
Confirm this is your product
Closely named formulas, colors and regional versions can use different times. Match these details to your container before starting a countdown.
- Exact listing
- Copps Industries Diamond Clear Casting Resin
- Variant
- Deep-pour epoxy casting system
- Region
- US
- Listed use
- river tables, deep castings
- Timed stages recorded
- tooling, tack free, set, full cure
- Source checked
- 2026-10-25
Documentation: Technical data sheet · Technical bulletin, 06/06/23
Condition attached to the stated time: The source gives no conditions for this time.
About this product
A slow deep-pour casting resin: 4 to 6 hours of working time, a 24 hour gel, and 72 hours for a through cure. Slow cure keeps heat down in thick pours.
Using this specific product
Copps Industries Diamond Clear Casting Resin is listed here as the Deep-pour epoxy casting system version for river tables and deep castings. For casting resin, the useful question is not simply whether the surface looks finished—it is whether the exact next-action milestone shown above has been reached.
Before you start
- Confirm the package says Deep-pour epoxy casting system; related versions can use different timing.
- For river tables and deep castings, pay particular attention to accurate mixing, mold material, mass and room temperature.
- The source gives no conditions for this time.
How to check readiness
Check the casting itself for flex or tack before demolding. The sheet gives a working time of 4 to 6 hours. The sheet gives tack free in 24 to 48 hours at 1 inch deep and 75°F. The sheet gives gel at 24 hours for a 100 g mass.
Avoid this mistake
Demold time is not necessarily full mechanical cure.
Compare with similar products
- Compare with EcoPoxy FlowCastTack-free: 20 h to 1.83333 days there, 1 day to 2 days here.
- Compare with Passeport Elite Casting EpoxyTack-free: 3–4 days there, 1 day to 2 days here.
Questions
How long does this product take to dry?
Copps Industries states: The sheet gives a working time of 4 to 6 hours. Conditions: The source gives no conditions for this time.. The sheet gives tack free in 24 to 48 hours at 1 inch deep and 75°F. Conditions: The source gives no conditions for this time.. The sheet gives gel at 24 hours for a 100 g mass. Conditions: The source gives no conditions for this time.. The sheet gives a through cure at 72 hours. Conditions: The source gives no conditions for this time.. These are the manufacturer’s stated times, not a guarantee.
How long until a Diamond Clear Casting pour is cured through?
The sheet gives 72 hours, with tack free in 24 to 48 hours at 1 inch deep and 75°F.
How long does this product take to fully cure?
Copps Industries states: The sheet gives a through cure at 72 hours. Conditions: The source gives no conditions for this time.. These are the manufacturer’s stated times, not a guarantee.
How long do I have to work with this product?
Copps Industries states: The sheet gives a working time of 4 to 6 hours. Conditions: The source gives no conditions for this time.. These are the manufacturer’s stated times, not a guarantee.
How long until this product is tack-free?
Copps Industries states: The sheet gives tack free in 24 to 48 hours at 1 inch deep and 75°F. Conditions: The source gives no conditions for this time.. These are the manufacturer’s stated times, not a guarantee.
What affects how long this product takes to dry or cure?
Casting resins cure faster and hotter in large or warm pours. Follow the current data sheet and pour limits. Follow the product label for your conditions.