Free Form Habitat Black
Epoxy putty for habitats · US · manufacturer-sourced
How long before you can demold Smooth-On Free Form Habitat Black?
Short answer
Cast-and-demold plan
Gel, demold and full cure are separate days
- Mix the Epoxy putty for habitats to ratio and pour
- Wait for the demold time
- Sand or finish after full cure
This product’s stated stages Quoted at 73°F
- Working time ends1 hour
- Demold16 hours
Worth noticing: Working time is only 1 hour; the next stated stage, demold, is 16 hours.
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 habitat building, aquascaping, and putty, identify which stage the stated to demold 16 hours milestone actually unlocks. Earlier handling does not prove final cure.
Time demold and cure
Your countdown
Stated times
- Working time ends1 hour
- Ready to demold16 hours
From Smooth-On data sheet · checked 2026-10-25. Anything not listed isn’t stated by the manufacturer.
Manufacturer website: smooth-on.com
Conditions & fine print
- Stated conditions: 73°F (23°C)
- Pot life and cure time shorten in warm rooms and with bigger batches. Follow the current technical bulletin for mix ratio, mixing and release agents. The chart is a summary.
- Region US. Formulas can differ between countries; check your container.
- Working time ends: The source gives no conditions for this time.
- Ready to demold: At 73°F (23°C).
- 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 Report outdated information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
- Smooth-On Free Form Habitat Black
- Variant
- Epoxy putty for habitats
- Region
- US
- Listed use
- habitat building, aquascaping, putty
- Timed stages recorded
- tooling, demold
- Source checked
- 2026-10-25
Documentation: Technical data sheet · Technical Data Chart (no revision date)
Condition attached to the stated time: The source gives no conditions for this time.
About this product
A black epoxy putty in the Free Form Habitat family. The chart gives a 60 minute pot life and a 16 hour cure, shorter than the 24 hour cure of the Flex FR habitat row.
Using this specific product
Smooth-On Free Form Habitat Black is listed here as the Epoxy putty for habitats version for habitat building, aquascaping, and putty. 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 Epoxy putty for habitats; related versions can use different timing.
- For habitat building, aquascaping, and putty, pay particular attention to accurate mixing, mold material, mass and room temperature.
- The source gives no conditions for this time. At 73°F (23°C).
How to check readiness
Check the casting itself for flex or tack before demolding. The technical data chart gives a pot life of 60 minutes. Flex the mold away at one edge and stop if the casting bends, tears or remains tacky.
Avoid this mistake
Demold time is not necessarily full mechanical cure.
Compare with similar products
- Compare with Alumilite Amazing Clear Cast PlusDemold: 1 day to 2 days there, 16 h here.
- Compare with EcoPoxy FlowCastDemold: 3 days there, 16 h here.
Questions
How long before you can demold this product?
Smooth-On states: The technical data chart gives a pot life of 60 minutes. Conditions: The source gives no conditions for this time.. The technical data chart gives a cure time of 16 hours. Conditions: At 73°F (23°C).. These are the manufacturer’s stated times, not a guarantee.
How does Habitat Black compare with Habitat Fire Safe?
Habitat Black has a 60 minute pot life and a 16 hour cure on the chart. Fire Safe has a 90 minute pot life and the same 16 hour cure.
How long do I have to work with this product?
Smooth-On states: The technical data chart gives a pot life of 60 minutes. 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?
Pot life and cure time shorten in warm rooms and with bigger batches. Follow the current technical bulletin for mix ratio, mixing and release agents. The chart is a summary. Follow the product label for your conditions.