The urethane hardener is good stuff, I thought I was supposed to wash my hands with it, just like we did with carbon tetrachloride, leaded gasoline, etc. Mercury, and the spit balls we made from the asbestos insulation on the steam pipes in grade school were also part of our fun. I'm pretty sure all of those great materials are the reason I'M so well preserved. Now that I think about it, it must have been the sodium nitrite, sodium nitrate, and whatever else I inhaled, ingested, and absorbed while in the meat industry producing ham, bacon, hot dogs, cold cuts. All kidding aside though, take every precaution to protect yourself from the chemicals in the painting process.