Elsewhere on the forum, I described in too much detail my experience installing a Fantech FR 125 at the end of my short duct run. It may have helped a little bit, but I’m not sure. It was a lot of work, so I want to believe that it was worthwhile, but I still get a (tolerable) smell and a measurable jump in indoor pollution levels when using the Glowforge. It’s quite possible that it’s exactly the same amount as before. At this point, I’ve made my peace with it and I’m willing to live with it, I just wish I could figure out exactly where it’s coming from. I hate mysteries.
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