Nat Anselm
Broken image

3D Printed Ventilation Fan

I needed a fan to ventilate the smoke that my laser engraver makes. Since I had already had suitable motor on hand, I decided to build a fan myself instead of buying one.

Design

First of all, I designed the fan in OnShape. You can access the design here.

The fan is designed to fit 100mm exhaust pipes.

image

Printing

I use Prusaslicer to prepare my designs for printing. I used organic supports for the bottom half to support the mounts where the cross-section for the motor will be attached to.

image image

All of the parts together took approximately 90m of PLA filament and 10 hours to print.

image

Electronics

The motor is a brushless A2212/6T 2200kV, often used in RC airplanes. I originally intended to use an Arduino UNO or Arduino Pro Micro to control the motor, but I found a cheap servo/ESC tester on Aliexpress that works great.

The power supply is 12VDC.

image

Assembly

I used threaded heat inserts and M3 screws to hold everything together. To reduce vibrations, I also added rubber washers on the motor mount.

image image image

Conclusion

Overall, it was a success, except that it can get really loud and is about ten times too powerful :)