25mm Raspberry Pi Fan Adapter

Adapter to fit a 25mm raspberry pi case fan into a 30mm fan slot.

The fan side is actually 25.5mm and the outer edge of the fan adapter is 29.5mm to allow a loose friction fit instead of having to screw anything together. There is a 'lip' on one side to prevent the fan from falling out, so mount it with the lip opposite the back wall of wherever the fan will be mounted against.

There is also a cutout in one corner to allow the wires through without having to bend too much or remove from the wire holder in the stock fan body.

I found it easier to just print this adapter than remix the raspberry pi case cover I found (I used this case https://www.thingiverse.com/thing:3724434).

OpenSCAD file included incase you need to build for a different size fan or make any other adjustments.

Print Settings

Printer Brand:

Creality

Printer:

Ender 3

Rafts:

No

Supports:

No

Resolution:

0.2

Infill:

20

Filament: Anet PLA green

Notes:

Print with the 'lip' side down to avoid needing any supports.