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techwallaHQ on Twitter: "Turning a computer fan into a portable battery-operated fan is a conversation starter. https://t.co/RlPAKn9hIJ https://t.co/df8qy4N9Wf" / Twitter
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portable 120mm case fan with 18650 battery, charging and boost circuit by Marius | Download free STL model | Printables.com
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