I have used Lacquer and Urathane from a can and had problems with both. Now I am using Krylon Crystal Clear (Acrylic). This stuff is great. dries in 10 min, recoat anytime and it fills the grain. Dries over oily wood and can be sprayed over existing finish. Does not yellow like Polly. Sand between coats for a glass finish. Have any of you guys used this product????