Does UltraClear epoxy stick to plastic, PVC, or plexiglass?

No. UltraClear Bar & Table Top Epoxy does not adhere to plastic, PVC, or plexiglass, so none of them can be used as a substrate. That includes molded plastic or composite table tops, PVC sinks, and acrylic panels. If your table is plastic, the epoxy cannot be used over it.

The one exception is a small plastic or plexiglass area inside a larger wood surface, such as a plexiglass window set into a wood table top. If the majority of the surrounding surface is wood, there should be enough area for the epoxy to adhere. For a countertop with a PVC sink, apply the epoxy to the flat, level countertop only, not the sink.

The epoxy is also not suited to engineered plastic parts that need a water-resistant coating, such as an ABS 3D-printed bowl that will see daily water and shampoo. It is designed for surfaces like bars, tables, and countertops.

For the full list of surfaces the epoxy does work over, see: https://ultraclear.helpscoutdocs.com/article/111-epoxy-surfaces