Hello, 12 ft Mahogany counter top, well sanded to 320 grit. I Followed the directions to a T. had to build a plastic room around the area to maintain 74 degrees and used a small heater. (i'm in upstate NY.) Put on 2 heavy seal coats 24 hours apart, sanded lightly and wiped with denatured alcohol between all coats. and one top coat, ( yes I turned off heater and aired room till alcohol evaporated. Brushes, mixer and plastic pails were worth the money. Beautiful job and finish. Used a quality heat gun to release bubbles. Not one visible on finished top. Please buy enough product. use the calculator on the website and follow the directions