This is an adapter to connect a 120mm PC fan to a 4 inch duct/pipe/dryer hose. I know there are already models like this out there, but I always find something I wish was done a little differently, so here's mine. It has the following features:
- Fully parametric F3D file included in case you have a different sized fan, duct, or if you think I got something wrong (with labels and comments to make it easy to follow)
- Everything slightly chamfered on the bottom for built in elephants foot compensation (not that it would affect much anyhow)
- Chamfered top to make it easier to seat a duct to the adapter in the case you have a tight fit
- Fairly thick attachment point for strength
- Fairly tall attachment point to give you plenty of room for tape or whatever
- Relatively tight fit compared to at least one of the others that I tried (but not overly tight)
- Countersunk screw holes to hopefully reduce your chance of cracking the plastic if you're using screws with tapered heads like the standard PC fan screws
I printed this with a 0.6 nozzle at a 0.4 layer height using orange prusament PETG at 260 degrees with no fan for optimal layer adhesion. Had some wisps and stuff but overall the print quality was decent.
- Added STL for 92mm fan to 1.5" plumbing pipe (May 9, 2023)
tyler
