Resin can be used in jewelry making for casting but are more typically used to seal/cover and embed images or found objects within bezels. Resins can be two-part epoxy resins that you mix (a resin with a hardener) just before using or pre-mixed varieties that you simply pour to use. Many resins cure (dry and harden) within about 24 hours, but UV resins can cure in minutes under a UV light or slightly slower in sunlight. Qualities to consider when choosing resins include how clear they cure (not cloudy or yellowish), how prone they are to bubble, whether they dome well or not, if the surface remains tacky or dries shiny and hard, and their toxicity and fumes.

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