A Desktop Fan Enclosure

I solder a lot but do not have an extractor fan so I designed a simple fan housing to hold a spare 120mm PC fan and some carbon mesh. Obviously not ideal but better than nothing...

The fan is powered using two LIPo batteries (6 - 8.4 volts) and uses an inexpensive eBay battery module to allow charging and prevent discharging below a safe level and of course a simple on/off switch...

Note, the fan runs perfectly with voltages lower than 12 volts and a welcome side effect is they are much quieter, you could add another battery or even use a different supply...

Meshes
It's a bit tricky to design a fan enclosure that doesn't have to be printed in many parts as they normally contain meshes and these are normally printed horizontally, resulting in many parts to assemble and glue... In this case they are printed in one piece...

The top and bottom (containing the electronics/batteries) are printed separately... an opportunity to add some color ;)

Printing
In my fist test print I did not include any of the horizontal braces, as a result the vertical mesh structures started to wobble at about 85mm long and resulted in malformed grid. Mind you, 85mm is pretty good... the CR-10 is a pretty good printer...

Currently printing again with added braces and expect it should work. If not, I will redesign it and report back. So don't print while it is marked as "a work in progress"...

Updates
Updated the DeskTopFanBody.stl file (26 April 2018) as the fan mount screw holes were misaligned but the fit is so good you don't need screws. The two horizontal supports structs worked perfectly and once again the CR-10 performed beautifully, the print is flawless absolutely flawless...

Tested fit using Corsair 120mm fan...
Mike

Creality

CR-10

Doesn't Matter

No

0.3

20

Slicer
Cura 3.3.1

• Temperature: Nozzle 200°C Bed 55°C
• Layer Height: 0.3mm
• Retraction Distance: 5mm
• Retraction Speed: 40mm/s
• Speed: 60mm/s
• No supports

Print Times
Main Body: Cura estimates 6 hours, actually more, I didn't note down the start time but closer to 8. Top and Bottom TBA but certainly under 4 hours for both...