downdraft soldering fume extractor
thingiverse
A downdraft fume extractor using an 80mm computer fan inset in my workbench. Uses this switch from amazon https://www.amazon.com/gp/product/B075VBV4QH , an 80mm computer case fan, 2 M5 nuts and 2 M5x15mm socket head cap screws. Route a 149mm diameter circle in bench, 6.35mm deep (1/4") for flange. Through hole in bench should be ~127mm diameter.
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