Attention: This model can be printed support-free on its head (Flat side down, tube up). After the print you just need to remove the one layer inside the tube.
This is a fan funnel for a Noctua 80mm fan which I place in my ikea sideboard which I'm using as cabinet for my Monoprice Select Mini V2 and my IKEA Lack Table Enclosure.
Additionally only a hole is needed inside your cabinet/enclosure with the proper diameter.
This fan funnel can be printed on its head. The output tube will be printed on a bridge of the upper case wall (bottom) when using "noSupport" version as described in this youtube video https://www.youtube.com/watch?v=upqTE8EPZIQ . So in this version the hole is covered by 0.2mm layer. The bridged layer can than be removed with a deburrer.
The version "needed" support is generated as it will be used.
Checkout Github for newer versions of SCAD File: https://github.com/andimoto/mpsm-upgrade-parts
The author marked this model as their own original creation.