Can you spray acrylic lacquer over urethane?
Keeping this in consideration, can you put lacquer over urethane?
If you are talking about spraying lacquer over the polyurethane and the poly is well aged, you might be able to get away with it by spraying light well-thinned coats of the lacquer. The safest thing to do is to use dewaxed shellac over the poly and then you can go to the lacquer without worry.
Subsequently, question is, can you spray lacquer over acrylic? When you spray lacquer over a solvent-based acrylic finish, they combine to form a hybrid film, even if the acrylic is pigmented to form a paint. It isn't unusual to clear-coat an acrylic paint finish on a metal surface, such as on an automobile, with CAB-acrylic or acrylic lacquer.
Hereof, can you spray lacquer over urethane primer?
You should be able to spray lacquer over the 2k urethane primer. You certainly can with PPG products. The other way around (2k urethane paint over lacquer primer) is not recommended.
Can you spray over lacquer?
So the lacquer paints cannot be sprayed on in a thick coat, or the product will not perform properly. Lacquer paints dry to a hard shell, leaving a very thin paint film. Lacquer can be over-coated with other lacquer, paints, or enamels and acrylics.