Biqu B1 - modified 2 piece fan duct
thingiverse
A remix of a 2 piece fan duct uploaded on the Biqu B1 FB group + better sealing with the blower fan + duct has been lowered to better aim the airflow towards the molten plastic + integrated support inside the duct for better printability, considering that you might be printing this with a busted fan duct - fitment with the stock Biqu B1 fan is a little bit tight, but it still fits. tested perfect fit with replacement fans.
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