I'm glad this seems to have helped some. Now that I have used the fan with the torch etc. it works very well. Somewhat noisier under the hood than outside it but still quieter than when I was using a hot head torch. I think I am going to lower the hood down a bit since I don't have a box around the set up I think that will help the plume get directed up instead of perhaps being pushed around a bit. After i get makeup air ducted in instead of open window behind me that will also help with the air circulation. Yep, I'm happy with it. Happy Torching everyone.
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