If so the contamination is in the spray system finish or solvent thinner you use.
Fisheyes in floor wax.
If it will cover 60 square feet per pint but only a small area is involved cut down on both varnish and preventer.
If fisheyes appear in a basecoat allow the color to flash then spray a mist coat over affected area.
If that s not it sprinkle a sample of the wood you finish with talcum powder.
Due to differences in products use a manufacturer s recommended.
Repeat the test with a clean turbine gun to see if it s the spray system.
Over the years a homeowner may use oil soaps citrus based cleaners wax or silicone based products that build up penetrate into the depths of the finish and contaminate the flooring for when the next layer of finish is applied.
Do not use fisheye eliminator in undercoats or basecoat color.
Because fisheyes form during refinishing process they can sometimes be caused by years worth of damage.
Your floor should be absolutely clean before applying the final finish.
Read the container of finish to find out what the spread rate is.
If the paint has dried sand to a smooth finish below the fisheye cratering and refinish.
Clean a piece of glass plexi with a new can of naptha.