Homebrew PCBs

On Sun, 10 Apr 2005 14:30:31 -0300, Alexandre Souza  
<alexandre-listas@...> wrote:

>
>> Now if i only had food coloring at hand....
>    Spherographic pen ink? Inkjet ink?


I do not want too much of a mess.
When looking at the drops on the inside of the glass one can see how much  
they change and if there are areas where they change less.
I am not so sure color would make things easier to see (because you can  
never see the drops flying at 10000RPM anyway).

I have more or less given up on the idea of color. As soon as i am  
confident all areas of the glass plate are impacted by drops i will try  
etchant where i will see which areas will etch first.


I think maybe it would be good to implement some kind of centrifugal pump  
in the bottom end of the tube. If i make vanes at the bottom, they will  
throw the water outward. If i have a ring preventing it from going out the  
bottom again it must go upward. Im not sure if it would be better to have  
straight vanes or if it would be better to have them at an angle...
It doesn't seem most efficient to me to have a smooth tube.

ST