My son made a set of hands out of plaster of paris for a water fountain. The water will flow through the hands into a basin. I have read to used a water sealant followed by painting the piece followed by shellac. Does this sound like a good method or can anyone recommend a better way of protecting the plaster from the water.
Running or dripping water can eventually break through almost anything coating plaster. The only thing that comes to mind, that could forever preserve the original is boat resin.
You can get it at Home Depot, in the paint dept. I would suggest up to 3 coats, each one completely set up and dry before the next.