Firebay Peanut Fanduct features 2 x 40mm fans. Lower fan is for cooling the hot end heatsink, and it acts as fanduct attachment as well as 30mm <-> 40mm adapter. Upper fan is for layer cooling.

Design philosophy of this fan is to spread out air more evenly than many fang-style fans, also creating more turbulent airflow (which cools better) to the surface. Personally I would go with 40x40x20 mm fan on the upper fan, but you can adapt to your needs.

The fanduct was originally made for NF TC-01 dual-in single-out hot end, but it also seems to fit for example Tarantula stock hot end with the provided 2mm, 3mm or 4mm spacer (as the X-carriage bracket protrudes beyond the heat sink of hot end, depending of the carriage model) behind the duct. Use the appropriate spacer to fit into other hot ends which are using 30mm fan.

Update 6 Apr 2019: Added link to GIRO.remix - TEVO Tarantula / 40mm Fan BLTouch Mount (Peanut Edition).

Update 29 Mar 2018 : Added few round (capacitive/inductive) sensor holders to files.

Round sensor holder on side: Y offset 0, X offset +44mm.
Round sensor holder on front of fan: Not measured yet.

Update 30 Mar 2018 : Added STEP file for those adventurous that want to mod their hearts out. Share your remixes!

Update 31 Mar 2018 : Added adapter for 5015 radial fan, this is still beta, please report success/failure.

Update 1 Apr 2018 : Added STEP files for round sensor adapters and radial fan adapter.

Update 1 Apr 2018 : Updated Peanut to V2, with 30% increased airflow and less static pressure required (at least according to flow analysis)! Also STEP file updated.

BLTouch can be used with this adapter:
GIRO.remix - TEVO Tarantula / 40mm Fan BLTouch Mount (Peanut Edition): https://www.thingiverse.com/thing:3512631

Isaac Fankhauser mixed Peanut to be used with E3D V6 hot ends:
https://www.thingiverse.com/thing:3048440

Remix for use with Volcano:
https://www.thingiverse.com/thing:3185899

Duct should be printed face down on bed (see pictures) without supports.

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