Our holiday inflatables are plugged into a wifi outlet that turns them on and off at set times. Something that should add a little convenience to our life, right? Absolutely, if our inflatables didn't always fall back when they deflate, blocking the intake fan. Half the time I have go outside and pick them up so the fan can get enough air to start inflating them. I finally got tired of doing this and designed a simple shroud that adds to the original, ineffective fan shroud that would allow it to draw air even if something was pressed against the face of it.

This model is sized with a 98mm inner diameter and 44mm height, but can easily be scale up or down. I've included versions with slots covering 360deg, 180deg and 150deg of the shroud.

Very easy print, no supports needed. I was going to print mine in PETG, but there was CF-PLA already loaded up so I let it rip with that and it printed beautifully. It slipped into place over the original shroud and I added a little B-6000 glue to make sure it stays in place.