When to Demould Resin Cabochons

Demoulding at the right time is essential for achieving smooth, glossy resin cabochons and avoiding damage or sticking. Let’s explore optimal timings and how to ensure a perfect demould every time.

Typical Demoulding Times for Cabochons

The time it takes before you should remove resin cabochons from their mould depends on the resin type:

Epoxy resin: Let your cabochons cure in the mould for at least 12 hours. Demoulding too early can lead to warping or fingerprint marks, while waiting much longer may increase the risk of the piece sticking to the mould surface.
UV resin: Thanks to a rapid curing process, cabochons made with UV resin can usually be demoulded after just 2–3 minutes under a good UV lamp. Make sure the surface feels fully hard before handling.

Tips for Smooth Demoulding

To avoid issues such as surface dullness or difficulty removing your piece, always use a high-quality, flexible silicone mould like the Cabochon-15. For best results:

Check your resin’s specific instructions, as cure times can vary.
Ensure room temperature is stable; curing is slower in cooler conditions.
If using epoxy, resist the urge to touch or move the piece before 12 hours have elapsed.

When This Matters Most

Precise demould timing is crucial for clear cabochons and to keep your silicone moulds in pristine condition. This is especially important if you’re planning to add delicate inclusions or need a flawless finish for jewellery.

Related guides

How To Make Resin Cabochons

Understanding when to demould is a vital part of mastering resin cabochon making. For more essential tips and techniques, visit our cabochon how-to hub.