3Dprinting FanLess Cooling Pieces

Hi, this is a simple mod that remove the fan to cooling pieces.
The basic idea is to use aquarium areator instead of fan to cooling printed pieces. This config have some advantage .. 
Extrude and Bed temp more stable and power consumed is some less. My max power consumed is around 80w.

First version use a piece of tube that have the external diameter of 5mm and the internal of 4mm.  I flattened one of the ends.
The STL file you find on Thingiverse.
This video show the build and the explanation:

Second version use a piece a led lamp as mobile tips. I use default areator tube.
On the adapter the tube is put into hole, the hole is a little tapered to facilitate insertion of the tube. You can find it on Thingiverse.
The build and test run is show in the video below:

and here the video to show and explain how to set the tips

Areator Mod, Fan on/off

This is a simple mod, it consist in insert relè into areator.

The fan on reprap system is controlled with 12V PWM signal. The relè it is not possible to direct connect to PWM signal, it is necessary to adapt the signal.
For this signal adapter, you can get this  two  component:

- 1 bridge diode
- 1 condenser of 16V 100mF

The bridge-diode have function of decoupling from PWM signal. The condenser have function of stabilize PWM signal.

Obviously another component that you will need to have is the relè. You find a relè that have voltage around 10~15V, the best is 10~12V.

This circuit accept various signal to activate relè like these: 12V PWM, 12V AC, 12V DC

The scheme is very simple, see below ... but .. be very careful because you do not mess with 220V.

Below the electric scheme

Some imege of areator mod: