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Hi Lloyd, Was that the lady that sold you the can of OMNI hardener with the label saying "This material is designed for application by professional, trained personnel using proper equipment under controlled conditions, and is not intended for sale to the general public"? and on the same label: "...use a positive pressure air-supplied respirator for the entire time of spraying ..."? :o). Seriously though, different people are affected differently with different exposure levels to isocyanates. See the link that indicates even a single exposure can cause a problem for some and it is not predicable for any specific individual. I found this out the hard way for myself many years ago, which is why I wouldn't touch urethanes or hardened enamels without supplied-air. For individuals not in the employ of others, it is a personal decision (rightly so) as to what extent they will protect themselves from known hazardous materials, given the best information available. Read up on the hazards of isocyanates. Do a web search on the term. Make sure you understand the manufacturer's recommendations. Don't take any single recommendation as gospel. I am not going to tell you that you are great risk. I will tell you that I would not do it (anymore) and I would not recommend others do it. You will have to assess the risk(s) and make that final decision for yourself. Rod
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