![]() ![]() Most of the inline filters you’d be able to get from amazon are only going to result in 70-100CFM after adding the filter inline. ![]() You need a filter with a MERV rating of 13-14 to clean the visible smoke out and a final CFM rating of ~200 after adding the filter. It’s hard to get an inline fan that will pull enough air through a filter to keep the smoke out of the unit. I did a few attempts at making a filter before ending up with a BOFA unit. I have a HOA that has a no visible smoke rule so I can’t risk it. My personal setup is this Glowforge with exhaust fan removed (it’s loud just spinning when turned off) > BOFA unit > replaced the exhaust plate on the BOFA to make it output to a 4" duct > vent through a 3d printed adapter which converts the 4" duct to a window vent (12" x 1"). If you only care about the smoke part you’ll replace pre-filters but almost never need to replace the HEPA/charcoal filter (which is the expensive part). For ongoing costs getting a professional filter with separate pre and HEPA/charcoal filters is the cheapest option. Cutting wood produces tons of smoke, and depending on where you are that can be not okay. ![]()
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