I am finishing my hardwood floors tonight with an oil-based polyurethane. I bought a natural bristle paintbrush and a metal pan, as well as some KleanStrip paint thinner that is "made with Mineral Spirits".
At the end of the poly job I'd like to use the paint thinner to clean both the brush and the pan to make them reusable for future projects. What's the proper/best way? How much thinner do you use? How long does it take to work?
I guess I'm worried that if I use too much or just simply "dunk" the paintbrush in the thinner and leave it too long that I'll ruin my tools.