This is a quick heads up note about what can happen when you use oil based polyurethane -
I used poly on a few pieces (with a paintbrush) over the past three weeks, and I've developed a low grade cough with a tightness in my lungs.
My wife got on google and tells me this is likely a form of asthma in reaction to the isocyanates in the poly. It will most probably clear up, but I may be sensitized now, and even very small exposure might bring this on again.
I've used oil based poly on occasion over the years, from floors to furniture and back, but I'm surprised this happened - we all think we're the exception or are being careful enough. My workshop is fairly big (1,800 sq ft approx) and I had the roll-up door open. I know many of you will have smaller shops, garages or basement shops where the air flow is more restricted.
I will abstain using oil based poly as a straight finish, but I will still need to use the BLO/poly mix, so I'm hoping I won't react to that.
So heads up! Your health is your wealth.