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I wanted to make a fan to give a nice airstream while working on hot days and to redirect solder fumes while tinkering funny stuff.

Main goal for this model was:

• nice looking (always important ;-) )
• adjustable angle of the fan
• speed regulation
• powered by battery and DC power supply
• a propper on/off switch
• less noisy
• all cables should be hidden

For this model you need quite a bit of additional hardware. The electronics are more or less a suggestion that worked for me, perhaps you have other needs/skills/… to do it better/in another way.

UPDATE 18.05.2023 added parts for 80mm fan (25mm thick should be optimal, thiner should be ok, thicker fan is not ideal). This should work fairly well, but it is not tested.

UPDATE 19.05.2023 added parts for 80mm server fan 40mm thick. Use honeycomb_fan_grill_part_B_80x25 and honeycomb_fan_case_part_A_80x40

hardware list

• simple (1803BW) PWM motor controller with potentiometer, you can get from e.g. amazon see photo
• battery box for 8 AA batteries
• button clip for connecting the battery
• DC socket socket with switch contact
• fan: 92mm, I used Noctua NF-B9 redux-1600 PWM (or optional 80mm fan, but this is not tested and it is “retro fitted” so not 100% ideal, but should work fairly well)
• push button switch, round, diameter ~12mm
• cables
• 4x M2.5 heat set inserts
• 4x M2.5 flat head screws
• 1x M5x10mm screw
• 1x M5 nut
• 8x fan mounting screws
• a bit of packaging foam
• self adhesive rubber feet (I used the material around the adhesive feet that came with my prusa mini, but any other dampening self adhisive material will fit)

print instructions

no special stuff here.

As material I used PLA. (if you wonder why print quality of the gray parts arn't great on my photos, it is why my prusa mini had the strange extrusion problems with prusament … it's more or less fix atm, but I didn't reprint the parts, because it is functional and still in the OK range)

assembly

1. press M5 nut into the knob
2. fan: cut connector from cable (or remove the connector housing if you want to preserve it)
3. pull fan cables through the champfered hole of part A
4. pull cables through the cable channel of part C, but do not put in the fan yet
5. put part A into part C, the champfered hole of part A should face to the cable channel of part C
6. put M5 screw in the left hole of part A and secure it with the nut/knob
7. put fan in part A. Cable should face right upwards, route the cable accordingly
8. screw the fan to part A with fan screws
9. screw the grill (part B) onto the fan
10. now the base…
11. melt the 4 heat set inserts in place
12. insert components and solder all stuff - use photo of the interior and schematics - describing this in detail is a bit to much. if problems, ask in the comments
13. before inserting the potentiometer you have to break away the little thingy to put them flush in
14. connect cables of the fan to PWM controller
15. secure the battery box with foam, see picture
16. put top thingy onto the base. align the cable with the cutout in the base
17. use M2.5 screws to mount the top onto the base
18. … done :-)

See also my other workshop stuff: https://www.printables.com/@Antimaterie/collections/1000059

additional notes

I'm interested in your feedback to improve my stuff! So give me likes, post makes, comment and rate the print to show others and me how well it goes. If you post a make, let me know which filament you use.

If you want to support me by donating a coffee go to https://ko-fi.com/antimaterie I would really happy about it. The money will be invested in all stuff regarding 3d printing to give more and better quality models.

In general my Prints are not for commercial use, but if you are a print farm owner and want to sell some of my stuff, please contact me.

Hope you enjoy my models.