Legal stuff first, A12x25 is a fan owned by Noctua. Second, I stole the model from [this grabcad](https://grabcad.com/library/noctua-nf-a12x25-fan-1). But this definitely falls under fair use by parody.
Featured in The Fan Showdown: https://youtu.be/eOG-CfmrlQY (Thumbnail! Let's goooo)
He went above and beyond by separating the materials for the pads (I just used sharpie) and used some of those expensive soluble supports. If you want to do multi-material, you'd probably have to use a cad program or a slicer feature. Of course, someone else could do it and remix this post. His multi-material might be a little weaker because the print starts and stops where the fan connects to the rim, but at least it didn't grenade.
I think the soluble supports paid off because the details are all there, and the fan is small enough so that it's not too expensive. I'm happy to see it get about half the performance of a normal fan. The smoke test looked like it got wrecked, but you can see that at least most of the smoke is on the left side.

I printed it using tree supports and the top part of the hub facing down. I pressed it into the bed -0.8558 mm in the slicer to make it easier to print, but that loses the hilarious details like the silicone pads. The center of the hub was too thin because of that, so it ended up coming off, so I'm not sure if the part meets the hub height requirement. Maybe just don't push it on all the way. If you have some advanced support removal skills / soluble filament dual extruder, then you won't need to do that. For me, all of the supports for the fan blades came off when pulling the fan off of the bed, and the corners were shockingly easy to remove. Used sharpie on the corners to give the silicone pads their look.

The goal of this fan is to look hilarious and maybe move some air. It blows air, but I feel a draft blowing forwards, backwards, up, down, left and right. That's because the walls blow air whatever way they want to. The smoke test in the video shows that happening. Failing the smoke test was a partial goal of making the model funnier, and sadly I got beat by the Tesla Turbine for worst fan. Maybe next season.

A12X25 FanFan

A12X25FanFan.stl

Minimalistic marker holder that should be fast to print.
Open source, the code is [here](https://github.com/LeifMessinger/DryEraseMarkerHolder)
You can tweak some parameters, like how far they are spaced out, the diameter of the rod, how far the prongs go to hold it in.
This only works with a certain branded marker.
Not sure if I can **Expo**se it for fear of getting sued.

Dry Erase Marker Holder

Made in OpenSCAD
Source code is [here](https://github.com/LeifMessinger/CylinderDispenser)
Requires a spring to eject parts.
[Here's it in action](https://youtube.com/shorts/gP22oJ3OoVA?feature=share) (surprised thangs doesn't allow videos)

Cylinder Dispenser

CylinderDispenser.stl

Remix of Solder Sucker and Hakko Tips Holder by zwaky

Solder Sucker and Hakko Tips Holder with Magnet Holes

2x1
Holds the sucker loosely at 22.5mm
Tip holes are 7.3mm
Added a slot for holding wick

Fusion: https://a360.co/3Us7qgs

Solder Sucker and Hakko Tips Holder

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leifmessinger

A12X25 FanFan

Dry Erase Marker Holder

Cylinder Dispenser

Solder Sucker and Hakko Tips Holder with Magnet Holes