Solder Fume Extractor & Helping Hands Battery
thingiverse
Run Time at Max: ppm: 70 minutes, 1X3 18650 cells with 2400 mAh. I've added a control system (Arduino Nano) that lets you regulate the fan and it runs over 150 minutes at 50%. When the battery is low, you can plug in a 12V adapter and it will recharge during operation.
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