Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:4593842.

Magnétic fan duct for BLV MGN - E3Dv6 BMG Direct drive

4 x (4x7mm) néodyme 2 x (12x1mm) néodyme

https://www.amazon.fr/First4magnets-F047-10-Aimants-N%C3%A9odyme-traction/dp/B00TACMN1I/ref=sr_1_40?__mk_fr_FR=%C3%85M%C3%85%C5%BD%C3%95%C3%91&dchild=1&keywords=neodyme+4mm&qid=1599817472&sr=8-40

https://www.amazon.fr/Magnet-Expert-diam%C3%A8tre-n%C3%A9odyme-dadh%C3%A9rence/dp/B0095HRC3C/ref=sr_1_13?__mk_fr_FR=%C3%85M%C3%85%C5%BD%C3%95%C3%91&dchild=1&keywords=neodyme+12mm&qid=1599817524&sr=8-13