Last month I used my portable Shark vac with an extension hose (sander exhaust hose). I placed the vac unit on the porch and lead the hose to the piano. There was enough air flow to remove the fumes. I was able to treat (2 small bottles) the whole pin block on this tipped upright without any odor. It wasn't until afterwards when I used a small brush to tidy-up the exposed pin block without the vac did the fumes become noticeable directly over it. So a vacuum is a suitable exhaust mechanism. -- Regards, Jon Page
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