3D printed static mixer

In this episode I am designing and 3D printing classic static mixer for mixing fluids. In first try I tried to print it horizontally, but surface was not acceptable. Insecond version I modified the static mixer, so it can be 3D printed in vertical position. At the end of the video I am testing it with mixing two fluids (milk and coffie).
My previous video about spiral helix turbulence promoter:
   • Spiral helix turbulence promoter for ...  

All STL files used in video can be downloaded from my website:
http://mytechfun.com/video/22

Content of the video:
00:00 introduction
01:48 design v1
06:44 horizontal 3D printing
07:37 design v2
12:01 vertical printing
13:36 prepare for using
14:26 slow motion mixing fluids
15:28 summary

Szent István University:
http://www.sziu.hu/

About static mixer on wikipedia
https://en.wikipedia.org/wiki/Static_...