Two-component epoxies, which require mixing resin and curing agent before use, often suffer from issues such as mixing ratio ...

The best UV-resistant resins offer a glossy ... to work with and perhaps even better than spray paint. However, since you are using epoxy to make an epoxy tumbler, precautions are advisable.

EP30-2 cures at room temperature or more rapidly at elevated temperatures. This epoxy flows smoothly and evenly after mixing, and is easily applied as an adhesive, coating or potting material.