I have a customer who wants to buy one of my completed bowls, but wants a hard/durable/low maintenance finish on it. Problem is, I finished it 6 months ago with eee ultra shine and a bit of walnut oil.

the customer wants a "hard finish" because the bowl will be handled daily in her classroom and she doesn't want to have to reapply oil or wax to keep it shiny/glossy.

My guess is that shellac might be the only option but I've never put shellac over eee.... bad idea? Will a sanding sealer stick to a wax based finish? The eee ultra shine is buffed in, so that's what has me most concerned.

Any education on this matter would be much appreciated.