Short answer: UV resin is one-part and cures in minutes under UV light but only in thin layers; epoxy is two-part, slower, cheaper per ml and can be poured deeper.
| UV resin | Two-part epoxy | |
|---|---|---|
| Mixing | none | measure A + B exactly (ratio) |
| Cure | minutes under a lamp | hours to days (cure time) |
| Depth per layer | thin (often a few mm) | ⅛" to several inches by formula |
| Opaque colors | hard to cure through | fine |
| Cost per ml | higher | lower |
| Best for | jewelry, small fixes, doming | coasters, trays, tables, castings |
Both need gloves and ventilation; follow the safety data sheet.
For small thin projects yes; for anything thick, large or opaque, epoxy works better and costs less.
Generally yes on cured epoxy for a quick top layer; test first, since results vary by product.
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